Control method and device for preventing dry burning of a stove, stove, computer readable storage medium

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a stove, which comprises an inner ring fire cover, a region at the center of the inner ring fire cover being adapted to form a circulating space with the bottom of a pot placed on the stove; a heat-absorbing temperature-changing module extending from below the inner ring fire cover into the circulating space and having a top lower than the upper end of the inner ring fire cover; the heat-absorbing temperature-changing module being used for absorbing heat of the circulating space and changing temperature; and a control module connected with the heat-absorbing temperature-changing module and used for judging dry burning according to the temperature change of the heat-absorbing temperature-changing module. The heat of the circulating space composed of the region at the center of the inner ring fire cover below the bottom of the pot is absorbed by the temperature-sensing component to reflect the temperature change of the bottom of the pot, the top of the temperature-sensing component is lower than the upper end of the inner ring fire cover, non-contact temperature measurement is realized, faults caused by high temperature are less likely to occur, and the temperature-sensing component is suitable for various pot bottom shapes. The application further discloses a control method and a control device for preventing dry burning of the stove, and a computer readable storage medium.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent household appliances, for example to a control method and device for preventing dry burning of a cooktop, a cooktop and a computer readable storage medium. BACKGROUND

[0002] Dry burning refers to long-time heating of an empty pot, which leads to dry burning and burning of the pot due to long heating time, and is a common safety hazard in the kitchen. Dry burning of the pot can cause discoloration and deformation of the pot, and in severe cases, can even cause a fire. At present, a common dry burning prevention function is provided in household cooktops, which automatically turns off the cooktop when the pot reaches a set threshold, thereby achieving dry burning prevention control of the pot and protecting the pot. However, cooking is a complex process, and the type of pot, cooking mode, fire size and amount of food in the pot all affect dry burning judgment.

[0003] In order to improve the accuracy of dry burning judgment, a gas stove is provided in the related art, which includes a cooktop including a cooktop panel and a pot rack provided on the cooktop panel, an inner ring fire cover and an outer ring fire cover provided on the cooktop panel, and a dry burning temperature sensing probe with the top of the dry burning temperature sensing probe being higher than the top of the pot rack. Temperature data is obtained by the temperature sensing element of the temperature sensing probe, and then a dry burning threshold is determined. When the temperature data is higher than the dry burning threshold, dry burning protection gas is started, which can greatly reduce the misjudgment of dry burning and achieve accurate temperature measurement of the bottom of the pot.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] Since the temperature sensing probe directly contacts the bottom of the pot for temperature measurement, the temperature sensing probe is easily damaged, and the temperature sensing probe has requirements for the pot. If the bottom of the pot is not flat or does not closely contact the temperature sensing probe, the temperature sensing probe will not be accurately detected, and the cooking state is easily misjudged, the actual cooking state does not match the judgment result, and the dry burning prevention effect is limited.

[0006] It should be noted that the information disclosed in the above BACKGROUND section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important elements or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a control method and device for preventing dry burning of a cooktop, a cooktop and a computer readable storage medium to improve the accuracy of temperature detection of the bottom of the pot.

[0009] In some embodiments, the stove comprises: an inner ring fire cover, a region in the center of the inner ring fire cover is adapted to form a ring flow space with the bottom of a pot placed on the stove; a heat absorption temperature changing module, extending from below the inner ring fire cover into the ring flow space, and the top is lower than the upper end of the inner ring fire cover; the heat absorption temperature changing module is used to absorb the heat of the ring flow space and change the temperature; a control module connected with the heat absorption temperature changing module, used to determine dry burning according to the temperature change of the heat absorption temperature changing module

[0010] Optionally, the inner ring fire cover further comprises: a fire ring, arranged at the upper end of the inner ring fire cover; the top of the heat absorption temperature changing module is lower than the lower end of the fire ring.

[0011] In some embodiments, the control method for preventing dry burning of the above stove comprises: obtaining temperature information of the heat absorption temperature changing module; determining the cooking stage of the pot according to the safety cooking parameter interval in which the temperature information is located; determining the corresponding dry burning prevention strategy according to the cooking stage of the pot.

[0012] Optionally, determining the corresponding dry burning prevention strategy according to the cooking stage of the pot comprises:

[0013] When the cooking stage of the pot indicates that dry burning occurs, controlling the stove to reduce the fire power;

[0014] When the cooking stage of the pot indicates that dry burning does not occur, obtaining the dry burning condition corresponding to the current stove fire power;

[0015] If the temperature information meets the dry burning condition, reducing the stove fire power.

[0016] Optionally, obtaining the dry burning condition corresponding to the current stove fire power comprises:

[0017] Obtaining the current stove fire power, and determining the fire power adjustment factor k0 which is positively correlated with the stove fire power;

[0018] If the temperature rising rate of the nth effective temperature in the temperature information meets ΔT n >k0*ΔT, it is determined as the dry burning condition;

[0019] Wherein, ΔT n is the temperature rising rate of the nth effective temperature collected before the current time in the temperature information, and ΔT is the temperature rising rate of the heat absorption temperature changing module in the first set time before the current time.

[0020] Optionally, determining the cooking stage of the pot according to the safety cooking parameter interval in which the temperature information is located comprises:

[0021] When a n < δ1, the corresponding cooking stage of the pot is the first stage;

[0022] in case of a n ≤δ2, the corresponding cooking stage of the pot is the second stage;

[0023] in case of a n >δ2, the corresponding cooking stage of the pot is the third stage;

[0024] wherein a n is the change rate of the temperature rising rate of the nth effective temperature collected before the current time in the temperature information, δ1 is the first safety cooking parameter, δ2 is the second safety cooking parameter, δ1<0<δ2; the first stage, the second stage and the third stage are arranged in order from the beginning to the end of the cooking period.

[0025] Optionally, before determining the current cooking stage of the pot according to the safety cooking parameter interval in which the temperature change information is located, the method further comprises: obtaining the stove fire and the safety cooking parameter; adjusting the safety cooking parameter according to the stove fire; and forming the adjusted safety cooking parameter into the safety cooking parameter interval.

[0026] In some embodiments, the control device for preventing the stove from dry burning comprises: a temperature detection module configured to obtain temperature information of the heat-absorbing temperature changing module; a control module configured to determine the cooking stage of the pot according to the safety cooking parameter interval in which the temperature information is located; and an execution module configured to determine the corresponding dry burning prevention strategy according to the cooking stage of the pot.

[0027] In some embodiments, the control device for preventing the stove from dry burning comprises a processor and a memory storing program instructions, and the processor is configured to execute the control method for preventing the stove from dry burning as described above when running the program instructions.

[0028] In some embodiments, the computer readable storage medium stores program instructions, and the program instructions are configured to cause the computer to execute the control method for preventing the stove from dry burning as described above when running.

[0029] The control method and device for preventing the stove from dry burning, the stove and the computer readable storage medium provided by the embodiments of the present disclosure can improve the dry burning prevention control effect.

[0030] The heat-absorbing temperature changing module absorbs the heat of the annular flow space composed of the area below the pot bottom and the center of the inner ring fire cover to reflect the temperature change of the pot bottom. The top of the heat-absorbing temperature changing module is lower than the upper end of the inner ring fire cover, so that non-contact temperature measurement is achieved, which is not prone to failure due to high temperature. The heat-absorbing temperature changing module is suitable for various pot bottom shapes. The accuracy of temperature detection is effectively improved, which helps to improve the accuracy of the cooking state judgment, and further improves the accuracy of the dry burning prevention control and reduces the misjudgment rate of the dry burning prevention. The dry burning judgment result is more accurate and timely, and is not affected by the type of the pot.

[0031] The foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to be limiting on the application. BRIEF DESCRIPTION OF DRAWINGS

[0032] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the application as defined by the claims. The same numbers in different figures identify the same components or features. Dimensions of components and features shown in the figures are chosen for convenience of explanation and are not necessarily to scale. In the figures:

[0033] Figure 1 is a use scenario schematic diagram of a stove provided by an embodiment of the present disclosure;

[0034] Figure 2 is a structural schematic diagram of a stove provided by an embodiment of the present disclosure;

[0035] Figure 3 is a flow schematic diagram of a control method for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0036] Figure 4 is a flow schematic diagram of another control method for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0037] Figure 5 is a flow schematic diagram of another control method for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0038] Figure 6 is a flow schematic diagram of another control method for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0039] Figure 7a is a temperature change schematic diagram of a heat absorption temperature change module of a stove provided by an embodiment of the present disclosure;

[0040] Figure 7b is a temperature change schematic diagram of another heat absorption temperature change module of a stove provided by an embodiment of the present disclosure;

[0041] Figure 8 is a schematic diagram of another control device for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0042] Figure 9 is a schematic diagram of another control device for preventing dry burning of a stove provided by an embodiment of the present disclosure;

[0043] Figure 10 is a schematic diagram of a stove provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below, and the accompanying drawings are used for reference only and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0045] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so as to implement the embodiments of the present disclosure described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0046] Unless otherwise specified, the term "multiple" means two or more.

[0047] In the embodiments of the present disclosure, the character " / " represents that the objects before and after are in an "or" relationship. For example, A / B represents: A or B.

[0048] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B, which means: A or B, or, A and B, three relationships.

[0049] The term "corresponding" can refer to an association or binding relationship, A corresponding to B means that there is an association or binding relationship between A and B.

[0050] In the embodiments of the present disclosure, the smart home appliance refers to the home appliance product formed after introducing microprocessors, sensor technology, network communication technology into home appliances, with the characteristics of intelligent control, intelligent perception and intelligent application. The operation process of the smart home appliance often depends on the application and processing of modern technologies such as the Internet of Things, the Internet and electronic chips, for example, the smart home appliance can realize remote control and management of the smart home appliance by connecting electronic devices.

[0051] In the disclosed embodiments, the terminal device refers to an electronic device with wireless connectivity. The terminal device can communicate with the aforementioned smart home appliances via the internet, or directly via Bluetooth, Wi-Fi, or other methods. In some embodiments, the terminal device may be, for example, a mobile device, a computer, or an in-vehicle device built into a hovercraft, or any combination thereof. Mobile devices may include, for example, mobile phones, smart home devices, wearable devices, smart mobile devices, virtual reality devices, or any combination thereof. Wearable devices may include, for example, smartwatches, smart bracelets, pedometers, etc.

[0052] Cooktop anti-dry-burning technology typically uses a temperature probe to detect the temperature of the pot's bottom and automatically shuts off the gas supply when the temperature reaches a preset threshold, preventing fires and other accidents. However, because the temperature probe directly contacts the pot's bottom for temperature measurement, it is prone to damage. Furthermore, the temperature probe is sensitive to the type of cookware; if the bottom of the pot is uneven or not in close contact with the probe, the probe may misjudge the cooking status, leading to discrepancies between the actual cooking conditions and the predicted results, thus limiting the effectiveness of the anti-dry-burning technology.

[0053] This solution uses a heat-absorbing and temperature-changing module to absorb heat from the circulating space formed by the area below the bottom of the pot and the center of the inner ring flame cap, reflecting the temperature change of the pot bottom. The top of the heat-absorbing and temperature-changing module is located at the top of the inner ring flame cap, achieving non-contact temperature measurement, which is less prone to failure due to high temperature and is suitable for various pot bottom shapes.

[0054] Figure 1 This is a schematic diagram illustrating the usage scenario of the stove provided in this embodiment.

[0055] Combination Figure 1 As shown, this usage scenario includes a cooktop 100 and a home cloud platform 110 for communicating with the cooktop 100. The cooktop 100 can be a common cooktop used in kitchens, such as a gas cooktop, induction cooktop, electric ceramic cooktop, or integrated cooktop.

[0056] The cooktop 100 can connect to the home's WiFi network and communicate with control terminals such as mobile phones and cloud servers. Users can also control the cooktop 100 to execute cooking program commands through a smartphone application.

[0057] The cooktop 100 communicates with the home cloud platform 110 via WiFi network. The home cloud platform 110 receives real-time status data from the cooktop 100 for subscription by the big data platform and application services. It also sends cooking program instructions from other business servers, big data platforms, application terminals, and smart terminals to the cooktop 100.

[0058] In other implementation scenarios of the present solution, a terminal device can also be included for communication with the stove 100 and / or the home cloud platform 110. Here, the terminal device refers to a smart device in the smart home application scenario, such as a smartphone, a wearable device, a smart mobile device, a virtual display device, etc., and can also be a smart home appliance device, such as a smart refrigerator, a smart television, a smart washing machine, a smart air conditioner, a smart speaker, a smart lamp, a smart curtain, etc., or any combination thereof.

[0059] Figure 2 FIG. 1 is a structural schematic diagram of a stove provided by an embodiment of the present solution.

[0060] In combination with Figure 2 The present solution provides a stove 100, which includes an inner ring fire cover 1, a heat absorption temperature changing module 2, and a control module 3. The area at the center of the inner ring fire cover 1 is adapted to form a circulating space with the bottom of a pot 7 placed on the stove 100. The heat absorption temperature changing module 2 extends from below the inner ring fire cover 1 into the circulating space and has a top lower than the upper end of the inner ring fire cover 1. The heat absorption temperature changing module 2 is used to absorb the heat of the circulating space and change the temperature. The control module 3 is connected with the heat absorption temperature changing module 2 and is used to make a dry burning judgment according to the temperature change of the heat absorption temperature changing module 2.

[0061] Here, the heat absorption temperature changing module 2 is used to absorb the heat of the circulating space composed of the area at the center of the inner ring fire cover 1 and below the bottom of the pot to reflect the temperature change of the pot bottom. The top of the heat absorption temperature changing module 2 is lower than the upper end of the inner ring fire cover 1, which realizes non-contact temperature measurement and is not prone to failure due to high temperature. The scheme is suitable for various pot bottom shapes and effectively improves the accuracy of temperature detection. At the same time, the heat absorption detection scheme using the heat absorption temperature changing module 2 has no requirement for the material of the pot 7 and is not affected by the emissivity of the material of the pot 7.

[0062] The heat absorption temperature changing module 2 refers to a device that uses its blackbody heat absorption effect to absorb external heat and convert it into temperature change of the device itself. In the present embodiment, the heat absorption temperature changing module 2 is a carbon rod, which has the performance of resisting sudden cooling and heating and is not prone to deformation at high temperature and has a high thermal conductivity.

[0063] In this way, the heat absorbed by the heat absorption temperature changing module 2 has a direct mapping relationship with the actual temperature of the pot bottom. By absorbing the heat of the circulating space through the heat absorption temperature changing module 2, the temperature sensor obtains the temperature of the heat absorption temperature changing module 2, and the temperature data is analyzed and processed, so that the cooking state of the pot 7 can be judged and dry burning control can be realized.

[0064] Optionally, the inner ring fire cover 1 further includes a fire barrier ring 4 arranged at the upper end of the inner ring fire cover 1. The top of the heat absorption temperature changing module 2 is lower than the lower end of the fire barrier ring.

[0065] The fire ring 4 is arranged at the upper end of the inner ring fire cover 1 and is connected with the inner ring fire cover 1. By sleeving the fire ring 4 on the inner ring fire cover 1, the direct influence of the flame on the central temperature of the inner ring fire cover 1 is avoided, and the stability of the circulation space between the bottom of the pot 7 and the center area of the inner ring fire cover 1 is further improved. At the same time, the central flame can effectively avoid burning the heat absorption and temperature changing module 2, and the accuracy and sensitivity of the heat absorption and temperature changing module 2 are ensured.

[0066] Further, the stove of the embodiment of the present disclosure further comprises a temperature sensor electrically connected with the control module 3, used for detecting the temperature of the heat absorption and temperature changing module 2 and transmitting to the control module 3, so that the control module 3 can make dry burning judgment according to the temperature change of the heat absorption and temperature changing module 2, and realize the safety control of the stove.

[0067] Optionally, the stove of the embodiment of the present disclosure further comprises an outer ring fire cover 5 arranged at the outer periphery of the inner ring fire cover 1, and a pot support 6 arranged at the outer periphery of the outer ring fire cover 5 and used for supporting the pot placed on the stove 100.

[0068] Compared with the traditional NTC (negative temperature coefficient) dry burning prevention probe, the heat absorption and temperature changing module in the stove provided by the embodiment of the present disclosure is not directly contacted with the pot during use, the dry burning prevention control device is not easy to fail, and there is no requirement for the bottom of the pot, so the adaptability is stronger. Further, compared with the infrared temperature measurement dry burning prevention sensor, the heat absorption and temperature changing module of the embodiment of the present disclosure has no requirement for the material of the pot and will not be affected by the emissivity of the pot material. At the same time, the inner ring fire cover and the module structure in the embodiment of the present disclosure make the flame not directly affect the circulation heat near the heat absorption and temperature changing module, so the temperature measurement is more accurate.

[0069] Figure 3 is a flow diagram of a control method for dry burning prevention of a stove provided by the embodiment of the present disclosure, which is applied to the stove described above. The control method for dry burning prevention of the stove can be executed by the stove; can also be executed in a server, such as a home cloud platform in communication with the stove; and can also be executed at a terminal device, such as a control terminal of a smart phone or a smart home appliance. In the embodiment of the present disclosure, the control module of the stove is taken as the execution subject, and the scheme is described.

[0070] As shown in Figure 3 , the control method for dry burning prevention of the stove comprises the following steps.

[0071] In step S301, the control module acquires the temperature information of the heat absorption and temperature changing module.

[0072] In step S302, according to the safety cooking parameter interval where the temperature information is located, the control module determines the cooking stage of the pot.

[0073] In step S303, the control module determines a corresponding dry boil prevention strategy according to the cooking stage of the pot.

[0074] The temperature information of the heat absorption temperature changing module refers to a temperature change value of the heat absorption temperature changing module after absorbing heat of the circulating space. The temperature information has a positive correlation mapping relationship with the bottom temperature of the pot.

[0075] The safe cooking parameter interval refers to a safe cooking range reflected by the cooking parameter corresponding to the temperature information. Different parameter intervals corresponding to the same cooking parameter represent different cooking stages.

[0076] The cooking stage of the pot refers to a plurality of stages divided according to the temperature change of the pot in the cooking process of the food material. In the embodiments of the present disclosure, the cooking stage at least includes a safe cooking stage and a dry boil cooking stage.

[0077] In this way, by obtaining the temperature information of the heat absorption temperature changing module to determine the cooking stage, and then executing the corresponding dry boil prevention strategy, the situation that the cooking state is incorrectly determined due to the detection error of the bottom temperature of the pot can be avoided. The accuracy of temperature detection can be effectively improved, which is helpful for the judgment of the cooking state accuracy, and thus the accuracy of the dry boil prevention control is improved, and the misjudgment rate of the dry boil prevention is effectively reduced. The dry boil determination result is more accurate and timely, and is not affected by the type of the pot.

[0078] The cooking stage of the pot can include a safe cooking stage and a dry boil stage. In this case, the temperature information generally includes the current temperature T of the heat absorption temperature changing module, and the corresponding safe cooking parameter interval generally includes (T0, T s ) and [T s , +∞), where T0 is a dry boil starting temperature, and T s is a dry boil threshold.

[0079] Then, according to the safe cooking parameter interval in which the temperature information is located, the cooking stage of the pot is determined, including:

[0080] In the case of T ≥ T s , the corresponding cooking stage of the pot is the dry boil stage;

[0081] In the case of T < T s , the corresponding cooking stage of the pot is the safe cooking stage.

[0082] In actual use, due to the hysteresis of the rise and fall of the pot bottom temperature, the application proposes to use the change rate of the heating rate of the heat absorption temperature changing module to determine the cooking stage of the pot.

[0083] Figure 4This is a flowchart illustrating another control method for preventing dry burning in a stove, provided in an embodiment of this disclosure, applied to the aforementioned stove. In this embodiment, the stove is used as the executing subject to describe the solution.

[0084] like Figure 4 As shown, the control method for preventing dry burning in stoves includes:

[0085] Step S401: The stove obtains the temperature information from the heat absorption and temperature change module.

[0086] In this embodiment, the temperature information of the heat-absorbing temperature-changing module includes n effective temperatures collected up to the current time, and the rate of change 'a' of the heating rate corresponding to the n effective temperatures is determined using the values ​​of the effective temperatures and the acquisition time. n .

[0087] Step S402, satisfying a at n consecutive effective temperatures n When the value is less than δ1, the cooking stage corresponding to the cookware is the first stage.

[0088] Step S403, satisfying δ1≤a at n consecutive effective temperatures n When the value is ≤δ2, the cooking stage corresponding to the cookware is the second stage.

[0089] Step S404, satisfying a at n consecutive effective temperatures n When the value is greater than δ2, the cooking stage corresponding to the cookware is the third stage.

[0090] Among them, a n δ1 represents the rate of change of the heating rate of the nth effective temperature collected before the current time in the temperature information, δ2 represents the first safe cooking parameter, δ1 < 0 < δ2, and the first stage, second stage, and third stage are arranged in order from beginning to end according to the cooking time period.

[0091] During the cooking process, the temperature changes of the heat absorption and temperature-changing module correspond to the corresponding cooking stages, as follows: Figure 7a As shown. In the first stage, the pot, which is at a relatively low temperature, absorbs heat along with the food inside, which is reflected in the temperature change of the heat absorption and temperature conversion module, showing that the temperature gradually rises and the rate of temperature rise gradually slows down; in the second stage, the pot and food have been heated or the pot has boiled, and the main body of heat absorption becomes the water in the pot, so the temperature of the bottom of the pot rises slowly; in the third stage, the food in the pot begins to burn or the water is dried up, and dry burning begins.

[0092] Therefore, when n consecutive effective temperatures satisfy a n When δ1 < a, the cooking stage is determined to be in the first stage; when n consecutive effective temperatures satisfy δ1 ≤ a nIn case that the temperature change information is less than δ 2, the corresponding cooking stage of the pot is the second stage; in case that the temperature change information is greater than δ 2, the corresponding cooking stage of the pot is the third stage. n In case that the temperature change information is less than δ 2, the corresponding cooking stage of the pot is the second stage; in case that the temperature change information is greater than δ 2, the corresponding cooking stage of the pot is the third stage.

[0093] In case that the current cooking stage is the third stage, the stove is controlled to reduce the fire power. In this stage, it is possible to occur the pot burning or dry burning, at this time, the stove is controlled to turn off the fire and cut off the gas, and the buzzer is controlled to alarm. In case that the current stage is the first stage or the second stage, the step S401 is returned.

[0094] Further, in case of different stove fire powers, the values of the safety cooking state parameters are different. For example, the pot temperature change speed thresholds corresponding to different fire powers are different. Thus, by combining the stove fire power, the corresponding safety cooking parameters are determined, which can improve the accuracy of the current pot cooking state safety determination.

[0095] Optionally, before determining the current cooking stage of the pot according to the safety cooking parameter interval in which the temperature change information is located, the method further comprises:

[0096] obtaining the stove fire power and the safety cooking parameter;

[0097] adjusting the safety cooking parameter according to the stove fire power, and composing the adjusted safety cooking parameter into the safety cooking parameter interval.

[0098] Here, adjusting the safety cooking parameter can include the adjustment direction and / or the adjustment amplitude of the safety cooking parameter.

[0099] Here, the adjustment direction refers to whether the safety cooking parameter needs to be increased or decreased corresponding to the current stove fire power, so as to achieve the adaptation to the current stove fire power.

[0100] The adjustment amplitude refers to the change amount of the safety cooking parameter corresponding to the current stove fire power when adjusting, so as to achieve the adaptation to the current stove fire power.

[0101] Further, in case that the adjustment trend includes the adjustment direction, the adjustment trend of the safety cooking parameter is determined according to the current stove fire power, comprising:

[0102] obtaining the stove fire power, and obtaining the adjustment direction of the safety cooking parameter corresponding to the current stove fire power by looking up the pre-stored corresponding relationship. The pre-set corresponding relationship includes the one-to-one corresponding relationship between the stove fire power and the adjustment direction of one or more safety cooking parameters. The corresponding relationship can be pre-stored in the controller of the stove, or can be pre-stored in other smart home appliances connected with the stove. In the process of communication between the smart home appliance and the stove, the corresponding relationship is called to determine the adjustment direction of the safety cooking parameter according to the stove fire power.

[0103] For example, the association relationship of the one-to-one correspondence relationship between the stove fire and the one or more safety cooking parameters can be pre-stored in the controller in the form of a table. Table 1 shows an example of the above-mentioned association relationship.

[0104] Table 1

[0105] Safe cooking parameters Correlation with hob power [delta 1] Negative correlation [delta 2] Positive correlation

[0106] Further, in the case where the adjustment trend includes an adjustment amplitude, the adjustment trend of the safety cooking parameter is determined according to the current stove fire, including:

[0107] The stove fire is obtained, and the adjustment amplitude of the safety cooking parameter corresponding to the current stove fire is obtained by looking up the pre-stored association relationship. The pre-stored association relationship includes the one-to-one correspondence relationship between the stove fire and the adjustment amplitude of the one or more safety cooking parameters. The association relationship can be pre-stored in the controller of the stove, or the association relationship can be pre-stored in other smart home appliances connected to the stove. In the process of communication between the smart home appliance and the stove, the association relationship is called to determine the adjustment amplitude of the safety cooking parameter according to the stove fire.

[0108] Figure 5 is a flowchart of another control method for preventing dry burning of a stove provided by the embodiments of the present disclosure, which is applied to the above-mentioned stove. In the embodiments of the present disclosure, the stove is taken as the execution subject, and the scheme is described.

[0109] As Figure 5 shown, the control method for preventing dry burning of a stove includes:

[0110] Step S501, the stove obtains temperature information of the heat-absorbing temperature-changing module.

[0111] Step S502, according to the safety cooking parameter interval where the temperature information is located, the stove determines the cooking stage of the pot.

[0112] Step S503, in the case where the cooking stage of the pot indicates that dry burning occurs, the stove is controlled to reduce the fire. For example, when the cooking stage of the pot is in the dry burning stage, or Figure 4 the third stage, it indicates that dry burning occurs.

[0113] Step S504, in the case where the cooking stage of the pot indicates that dry burning does not occur, the dry burning condition corresponding to the current stove fire is obtained. For example, when the cooking stage of the pot is in the safety cooking stage, or Figure 4 the first stage or the second stage, it indicates that dry burning does not occur.

[0114] Step S505, if the temperature information meets the dry burning condition, the stove fire is reduced.

[0115] By judging whether the temperature information meets the dry burning condition, the accuracy of the dry burning prevention control can be further improved, and the misjudgment rate of the dry burning prevention is effectively reduced.

[0116] By obtaining the dry burning condition corresponding to the current stove firepower, the accuracy of the current pot safety cooking determination can be improved.

[0117] Further, the dry burning condition corresponding to the current stove firepower is obtained, including:

[0118] The current stove firepower is obtained, and the dry burning condition corresponding to the current stove firepower is obtained by searching the pre-stored corresponding relationship. The pre-set corresponding relationship includes a one-to-one corresponding relationship between the stove firepower and the dry burning condition. The corresponding relationship can be pre-stored in the controller of the stove, or the corresponding relationship can be pre-stored in other smart home appliances connected to the stove. In the process of communication between the smart home appliance and the stove, the corresponding relationship is called to determine the corresponding dry burning condition according to the current stove firepower.

[0119] Specifically, the dry burning condition corresponding to the current stove firepower is obtained, including:

[0120] The current stove firepower is obtained, and the firepower adjustment factor k0 corresponding to the stove firepower is determined;

[0121] The temperature rising rate of the continuous n effective temperatures satisfies ΔT n >k0*ΔT, the dry burning condition is determined;

[0122] Wherein, ΔT n is the temperature rising rate of the nth effective temperature collected before the current time in the temperature information, and ΔT is the temperature rising rate of the heat absorption temperature module in the first set time length before the current time in the temperature information.

[0123] Wherein, the firepower adjustment factor k0 and the stove firepower are in a positive correlation. By establishing the corresponding relationship between the stove firepower and the heat absorption temperature module temperature rising rate, the dry burning condition corresponding to the stove firepower is determined, thereby improving the accuracy of the current pot safety cooking determination.

[0124] Figure 6 is a flowchart of a control method for preventing dry burning of a stove provided by an embodiment of the disclosure, and is applied to the stove described above. In the embodiment of the disclosure, the control module of the stove is taken as the execution subject, and the scheme is described.

[0125] As Figure 6 shown, the control method for preventing dry burning of the stove includes:

[0126] Step S601, the control module acquires the current stove firepower. In the case of change of the stove firepower, re-perform step S601, carry out the anti-dry burning calculation and judgment under the current stove firepower.

[0127] Step S602, the control module collects the effective temperature of the heat absorption temperature module to meet the set number n. After collecting the effective temperature of the heat absorption temperature module to meet the set number, every time a new effective temperature of the heat absorption temperature module is obtained, a new anti-dry burning calculation and judgment is carried out.

[0128] The temperature of the heat absorption temperature module (carbon rod) which can be directly collected by the temperature sensor can be used as the effective temperature at the current time; or the tail-removed average value of a plurality of temperature values collected in a continuous period of time can be calculated as the current effective temperature T.

[0129] Step S603, the control module determines the temperature information of the heat absorption temperature module according to the effective temperatures of the plurality of heat absorption temperature modules.

[0130] Here, the temperature information includes one or more of the effective temperatures of the n heat absorption temperature modules, the temperature rising rate of the nth effective temperature, the change rate of the temperature rising rate of the nth effective temperature, and the temperature rising rate of the heat absorption temperature module in the first set time length.

[0131] Step S604, when the effective temperature of the heat absorption temperature module collected at the current time is greater than the anti-dry burning starting temperature T0, the control module acquires the safe cooking parameter interval corresponding to the current stove firepower.

[0132] Step S605, when the continuous n effective temperatures satisfy a n In the case of <δ1, the control module determines that the corresponding cooking stage of the pot is the first stage, and enters step S608. Otherwise, enter step S606.

[0133] Step S606, when the continuous n effective temperatures satisfy δ1≤a n ≤δ2, the control module determines that the corresponding cooking stage of the pot is the second stage, and enters step S608. Otherwise, enter step S607.

[0134] Step S607, when the continuous n effective temperatures satisfy a n >δ2, the control module determines that the corresponding cooking stage of the pot is the third stage, and enters step S611. Otherwise, enter step S608.

[0135] Step S608, the control module determines the firepower adjustment factor k0 which is positively correlated with the stove firepower, and determines that the change rate of the continuous n effective temperatures all satisfy ΔT n >k0*ΔT as the dry burning condition.

[0136] Step S609, the control module determines whether the temperature information of the heat absorption temperature module meets the dry burning condition. In the case of meeting the dry burning condition, step S610 is entered, otherwise, it returns to step S602.

[0137] Step S610, the control module controls the stove to reduce the fire power.

[0138] Figure 7b The actual use is shown, and the measured temperature change information of the heat absorption temperature module under different stove fire powers is measured. Among them, the horizontal axis is the cooking time, and the vertical axis is the temperature detection value of the heat absorption temperature module (carbon rod). It can be seen that under different stove fire powers, the heating rate of the heat absorption temperature module and the change rate of the heating rate are different; the corresponding cooking stage is different under the same cooking time; the cooking time required to reach the same temperature is different. The temperature of the heat absorption temperature module is positively correlated with the temperature of the bottom of the pot, so as to reflect the temperature change of the bottom of the pot, and then the cooking state of the food in the pot is judged.

[0139] In this way, by acquiring the temperature information of the heat absorption temperature module to judge the cooking stage, and then executing the corresponding dry burning prevention strategy, the situation that the cooking state judgment is wrong due to the temperature detection error of the bottom of the pot can be avoided. The accuracy of temperature detection can be effectively improved, which is helpful for the judgment of the cooking state accuracy, and then the accuracy of the dry burning prevention control is improved, and the misjudgment rate of the dry burning prevention is effectively reduced. The dry burning judgment result is more accurate and timely, and is not affected by the type of the pot.

[0140] In combination Figure 8 As shown in the figure, the embodiment of the present disclosure provides a control device 800 for the foregoing dry burning prevention of the stove, which comprises a temperature detection module 81, a control module 82 and an execution module 83. The temperature detection module 81 is configured to acquire temperature information of a heat absorption temperature module; the control module 82 is configured to determine a cooking stage of a pot according to a safe cooking parameter interval where the temperature information is located; and the execution module 83 is configured to determine a corresponding dry burning prevention strategy according to the cooking stage of the pot.

[0141] In combination Figure 9 As shown in the figure, the embodiment of the present disclosure provides a control device 900 for the foregoing dry burning prevention of the stove, which comprises a processor 90 and a memory 91. Optionally, the device 900 can also comprise a communication interface 92 and a bus 93. Wherein, the processor 90, the communication interface 92, the memory 91 can complete the communication among each other through the bus 93. The communication interface 92 can be used for information transmission. The processor 90 can call the logical instructions in the memory 91 to execute the control method for the dry burning prevention of the stove in the above-mentioned embodiments.

[0142] In addition, the logic instructions in the memory 91 described above can be implemented in the form of a software function unit and sold or used as an independent product, which can be stored in a computer readable storage medium.

[0143] The memory 91 is a computer readable storage medium, which can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiments of the present disclosure. The processor 90 executes the program instructions / modules stored in the memory 91, thereby performing functional applications and data processing, i.e. implementing the control method for preventing dry burning of the stove in the above embodiments.

[0144] The memory 91 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and application programs required by at least one function; and the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 91 can include a high-speed random access memory, and can also include a non-volatile memory.

[0145] In combination Figure 10 As shown in the drawings, the embodiments of the present disclosure provide a stove 100, which includes a product body and the control device 700 (800) for preventing dry burning of the stove described above. The control device 700 (800) for preventing dry burning of the stove is installed on the product body. The installation relationship described herein is not limited to being placed inside the product body, but also includes installation connection with other components of the stove 100, including but not limited to physical connection, electrical connection or signal transmission connection, etc. Those skilled in the art can understand that the control device 700 (800) for preventing dry burning of the stove can be adapted to a feasible product body, thereby realizing other feasible embodiments.

[0146] The embodiments of the present disclosure provide a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are set to execute the control method for preventing dry burning of the stove described above.

[0147] The technical solutions of the embodiments of the present disclosure can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes one or more instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. various media that can store program codes.

[0148] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0149] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0150] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to apparatuses, devices, etc.) can be implemented in other manners. For example, the described apparatus embodiments are merely schematic. For example, the division of the units is merely a logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different units, or among them, can be indirect couplings or communication connections through some interfaces, devices, or units, and can be in electric, mechanical, or other forms.

[0151] The flowcharts and block diagrams in the drawings show the possible implementation architectures, functions, and operations of the system, method, and computer program product according to the embodiments of the present disclosure. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment, or a part of code, which contains one or more executable instructions for implementing the specified logical function. In some alternative implementations, the functions noted in the blocks can occur in different orders than those noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the drawings, the operations or steps corresponding to different blocks can also occur in different orders than those disclosed in the descriptions, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A control method for preventing dry boiling of a cooking appliance, characterized in that, The stove comprises: an inner ring fire cover, a region in the center of the inner ring fire cover is adapted to form a circulating space with the bottom of a pot placed on the stove; a heat-absorbing temperature changing module, extending from below the inner ring fire cover into the circulating space, and the top of which is lower than the upper end of the inner ring fire cover; the heat-absorbing temperature changing module is used to absorb heat of the circulating space and change temperature; a control module, connected with the heat-absorbing temperature changing module, used to make dry burning judgment according to the temperature change of the heat-absorbing temperature changing module; The control method comprises: obtaining temperature information of the heat-absorbing temperature changing module; determining the cooking stage of the pot according to the safety cooking parameter interval in which the temperature information is located; in the case that the cooking stage of the pot indicates dry burning, controlling the stove to reduce the fire power; in the case that the cooking stage of the pot indicates no dry burning, obtaining dry burning conditions corresponding to the current stove fire power; if the temperature information meets the dry burning conditions, reducing the stove fire power; wherein, the determination of the cooking stage of the pot according to the safety cooking parameter interval in which the temperature information is located comprises: In the case where the pot corresponds to the first stage, the cooking stage is the first stage; In the case where the pot corresponds to the second stage, the cooking stage is the second stage. In the case where the pot corresponds to the third stage; wherein, a n is a change rate of the temperature rising rate of the nth effective temperature collected before the current time in the temperature information, is a first safe cooking parameter, is a second safe cooking parameter, <0<0 ; the first stage, the second stage and the third stage are sequentially arranged from the beginning to the end according to the cooking period; is negatively correlated with the fire power of the cooktop, is positively correlated with the fire power of the cooktop.

2. The control method according to claim 1, characterized by, The inner ring fire cover further comprises: a fire blocking ring, arranged at the upper end of the inner ring fire cover; the top of the heat-absorbing temperature changing module is lower than the lower end of the fire blocking ring.

3. The control method according to claim 1, characterized by, Obtaining dry burning conditions corresponding to the current stove fire power comprises: obtaining a current stove power, determining a power adjustment factor positively correlated with the stove power k 0; The temperature rising rate of the continuous n effective temperatures satisfies , and the dry burning condition is determined. wherein, is a temperature rise rate of the nth effective temperature collected before the current time in the temperature information, is a temperature rise rate of the heat-absorbing temperature changing module in the first set time length before the current time in the temperature information.

4. The control method according to any one of claims 1 to 3, characterized by, before determining the current cooking stage of the pot according to the safety cooking parameter interval in which the temperature change information is located, further comprising: obtaining the stove fire power and safety cooking parameters; adjusting the safety cooking parameters according to the stove fire power, and composing the adjusted safety cooking parameters into a safety cooking parameter interval.

5. A control device for dry burning prevention of a stove, comprising: a temperature detection module configured to obtain temperature information of a heat-absorbing temperature changing module; a control module configured to determine the cooking stage of a pot according to the safety cooking parameter interval in which the temperature information is located; an execution module configured to determine the corresponding dry burning prevention strategy according to the cooking stage of the pot; wherein, in the case that the cooking stage of the pot indicates dry burning, the stove is controlled to reduce the fire power; in the case that the cooking stage of the pot indicates no dry burning, dry burning conditions corresponding to the current stove fire power are obtained; if the temperature information meets the dry burning conditions, the stove fire power is reduced; wherein, the determination of the cooking stage of the pot according to the safety cooking parameter interval in which the temperature information is located comprises: In the case where the pot corresponds to the first stage, the cooking stage is the first stage; In the case where the pot corresponds to the second stage, the cooking stage is the second stage. In the case where the pot corresponds to the third stage, the cooking stage is the third stage. wherein, a n is a change rate of the temperature rising rate of the nth effective temperature collected before the current time in the temperature information, is the first safe cooking parameter, is the second safe cooking parameter, <0<0 ; the first stage, the second stage and the third stage are sequentially arranged from the beginning to the end of the cooking period.

6. A control device for preventing dry boiling of a cooking appliance, comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the program instructions when running the program instructions to execute the control method for dry burning prevention of a stove as claimed in any one of claims 1 to 4.

7. A computer readable storage medium storing program instructions, wherein the program instructions comprise instructions for causing a computer to perform the method of any one of claims 1-6. The program instructions, when running, are used to make the computer execute the control method for dry burning prevention of a stove as claimed in any one of claims 1 to 4.

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