Method for preventing dry burning of stove and stove

Abstract

This application relates to a method and stove for preventing dry burns, and relates to the technical field of gas stoves. The method comprises: after the stove is ignited, obtaining the cooker bottom temperature corresponding to each monitoring moment; determining the cooker bottom heat capacity corresponding to each monitoring moment based on the cooker bottom temperature, a preset amplification factor, and a preset temperature change monitoring duration; and initiating dry burn protection when the cooker bottom temperature and the cooker bottom heat capacity meet preset dry burn protection conditions. This application can automatically identify cooking methods and implement different dry burn protection measures based on different cooking methods.

Description

Technical Field

[0001] The present application relates to the technical field of gas stoves, and in particular to a method for preventing dry burning of a stove and the stove. Background Art

[0002] Currently, the method of preventing dry burning of stoves is to monitor the temperature of the bottom of the pot through a temperature sensor. If the temperature of the bottom of the pot exceeds the set temperature threshold, anti-dry burning protection is implemented to prevent food from being over-burned.

[0003] Since the temperature sensor for measuring the temperature of the bottom of the pot is a contact temperature sensor, it is affected by the high-temperature flame environment at the bottom of the pot. Different contact thermal resistances are different, resulting in deviations in the temperature of the bottom of the pot measured by the temperature sensor, which cannot effectively prevent dry burning. Summary of the Invention

[0004] Based on this, it is necessary to provide a stove anti-dry burning method and stove to address the above technical problems.

[0005] In a first aspect, a method for preventing dry burning of a stove is provided, wherein the method comprises:

[0006] After the cooker is ignited, the bottom temperature of the cooker corresponding to each monitoring moment is obtained;

[0007] determining the heat capacity of the bottom of the cooker corresponding to each monitoring moment according to the temperature of the bottom of the cooker, a preset amplification factor, and a preset temperature change monitoring time;

[0008] When the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry-boiling protection conditions, the dry-boiling protection is activated.

[0009] As an optional implementation manner, obtaining the cooker bottom temperature corresponding to each monitoring moment includes:

[0010] The temperature of the bottom of the cooker corresponding to each sampling moment is collected at a preset sampling rate;

[0011] For each monitoring moment, the average temperature of the cooker bottom corresponding to a preset number of sampling moments before the monitoring moment is determined as the cooker bottom temperature corresponding to the monitoring moment.

[0012] As an optional embodiment, before determining the heat capacity of the cooker bottom corresponding to each monitoring moment based on the cooker bottom temperature, a preset amplification factor, and a preset temperature change monitoring duration, the method further includes:

[0013] Perform arithmetic average filtering on the cooker bottom temperature corresponding to each monitoring moment.

[0014] As an optional embodiment, determining the heat capacity of the cooker bottom corresponding to each monitoring moment according to the cooker bottom temperature, a preset amplification factor, and a preset temperature change monitoring time includes:

[0015] For each monitoring moment, querying a first cookware bottom temperature corresponding to the monitoring moment and a second cookware bottom temperature corresponding to a monitoring moment before the monitoring moment and separated from the monitoring moment by the preset temperature change monitoring time period;

[0016] The heat capacity of the cooker bottom corresponding to the monitoring moment is determined according to the first cooker bottom temperature, the second cooker bottom temperature, a preset temperature change monitoring time, and the preset amplification factor.

[0017] As an optional embodiment, the formula for determining the heat capacity of the cooker bottom corresponding to the monitoring moment based on the first cooker bottom temperature, the second cooker bottom temperature, a preset temperature change monitoring duration, and the preset amplification factor is:

[0018] Q=KΔt / (T p -T q );

[0019] Where Q is the heat capacity of the bottom of the cooker, K is the preset amplification factor, Δt is the preset temperature change monitoring time, T p is the bottom temperature of the first cooker, T q This is the bottom temperature of the second cooker.

[0020] As an optional embodiment, the preset dry-burn protection condition is an empty-burn dry-burn protection condition, and when the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry-burn protection condition, the dry-burn protection is activated, including:

[0021] If the temperature of the bottom of the cooker is greater than a preset first temperature threshold; and

[0022] The heat capacity of the bottom of the cooker is less than a preset first heat capacity threshold; and

[0023] If the duration is greater than or equal to a preset first duration threshold, it is determined that the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the dry-boiling protection condition, and the dry-boiling protection is activated.

[0024] As an optional embodiment, the preset dry-burn protection condition is a steaming dry-burn protection condition, and when the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry-burn protection condition, the dry-burn protection is activated, including:

[0025] If the maximum heat capacity of the bottom of the cooker is greater than a preset second heat capacity threshold; and

[0026] The heat capacity of the bottom of the cooker is less than a preset third heat capacity threshold; and

[0027] The duration is greater than or equal to a preset second duration threshold; and

[0028] If the difference between the cooker bottom temperature and the preset initial dry-boiling temperature is greater than or equal to a preset second temperature threshold, it is determined that the cooker bottom temperature and the heat capacity of the cooker bottom meet the cooking dry-boiling protection condition, and the dry-boiling protection is activated.

[0029] As an optional embodiment, the preset dry-burn protection condition is a cooking dry-burn protection condition, and when the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry-burn protection condition, the dry-burn protection is activated, including:

[0030] If the temperature of the bottom of the cooker is greater than a preset third temperature threshold; and

[0031] The heat capacity of the bottom of the cooker is less than a preset second heat capacity threshold; and

[0032] If the difference between the cooker bottom temperature and the preset initial dry-boiling temperature is greater than or equal to a preset fourth temperature threshold, it is determined that the cooker bottom temperature and the heat capacity of the cooker bottom meet the cooking dry-boiling protection condition, and the dry-boiling protection is activated.

[0033] As an optional embodiment, the preset dry burn protection condition is a frying dry burn protection condition, and when the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry burn protection condition, the dry burn protection is activated, including:

[0034] If the temperature of the bottom of the cooker is greater than a preset fifth temperature threshold; and

[0035] The heat capacity of the bottom of the cooker is less than a preset fourth heat capacity threshold; and

[0036] If the duration is greater than or equal to a preset third duration threshold, it is determined that the temperature and heat capacity of the bottom of the cooker meet the deep-frying dry protection condition, and the deep-frying dry protection is activated.

[0037] In a second aspect, a stove is provided, comprising a contact temperature sensor and a controller; wherein:

[0038] The contact temperature sensor is used to collect the temperature of the bottom of the cooker;

[0039] The controller is configured to determine the heat capacity of the bottom of the cooker corresponding to each monitoring moment based on the temperature of the bottom of the cooker, a preset amplification factor, and a preset temperature change monitoring time;

[0040] The controller is further configured to activate dry-burn protection when the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry-burn protection conditions, so as to implement the dry-burn prevention method for the cooker as described in any one of the first aspects.

[0041] The present application provides a method and a stove for preventing dry burning. The technical solution provided by the embodiments of the present application brings at least the following beneficial effects: after the stove is ignited, the temperature of the bottom of the cooker corresponding to each monitoring moment is obtained; the heat capacity of the bottom of the cooker corresponding to each monitoring moment is determined according to the temperature of the bottom of the cooker, a preset amplification coefficient and a preset temperature change monitoring time; when the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry burning protection conditions, the dry burning protection is started. The present application adopts a contact temperature sensor to achieve dry burning prevention under the condition of large temperature measurement deviation. Compared with the traditional dry burning prevention method, it automatically identifies the cooking stage and implements different dry burning protection according to different cooking modes to achieve diversity, and different dry burning protection points can be set. In addition, the present application is a software method, and there is no additional stove modification cost.

[0042] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 A schematic structural diagram of a stove provided in an embodiment of the present application;

[0045] Figure 2 A flow chart of a method for preventing dry burning of a stove provided in an embodiment of the present application;

[0046] Figure 3 A flow chart of a method for determining the bottom temperature of a cooker provided in an embodiment of the present application;

[0047] Figure 4 A flow chart of a method for determining the heat capacity of a cooker bottom provided in an embodiment of the present application;

[0048] Figure 5 This is a flowchart of an example of a method for preventing dry burning of a stove provided in an embodiment of the present application;

[0049] Figure 6 A schematic diagram of the structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0051] The stove dry burning prevention method provided in the embodiment of the present application can be applied to the stove. Figure 1 As shown, the cooker includes a contact temperature sensor 110 and a controller 120. The contact temperature sensor 110 is used to collect the temperature of the cooker bottom. The controller 120 is used to determine the heat capacity of the cooker bottom at each monitoring moment based on the cooker bottom temperature, a preset amplification factor, and a preset temperature change monitoring duration. The controller 120 is also used to activate dry-boil protection when the cooker bottom temperature and heat capacity meet preset dry-boil protection conditions.

[0052] The following will describe in detail a method for preventing dry burning of a stove provided by an embodiment of the present application in conjunction with specific implementation methods. Figure 2 This is a flow chart of a stove anti-dry burning method provided in an embodiment of the present application, such as Figure 2 The specific steps are as follows:

[0053] Step 201: After the cooker is ignited, the bottom temperature of the cooker corresponding to each monitoring moment is obtained.

[0054] In practice, a contact temperature sensor can be installed at the bottom of the cooker. After the cooker is ignited, the cooker controller uses the contact temperature sensor to obtain the cooker bottom temperature corresponding to each monitoring time. The monitoring time can be every second after the cooker is ignited or other preset time intervals. For example, after the cooker is ignited, the cooker bottom temperature T1, T2, T3...T can be stored every second. n .

[0055] As an optional implementation, Figure 3 This is a flow chart of a method for determining the bottom temperature of a cooker provided in an embodiment of the present application, such as Figure 3 As shown, the specific steps of obtaining the cooker bottom temperature corresponding to each monitoring moment in step 201 are as follows:

[0056] Step 301: The temperature of the bottom of the cooker corresponding to each sampling moment is collected at a preset sampling rate.

[0057] In practice, the actual sampling frequency of the contact temperature sensor corresponds to a time interval that is much shorter than the time interval corresponding to the monitoring moment. For example, the contact temperature sensor can use a 100ms sampling rate to collect the temperature of the bottom of the cooker, and the temperature of the bottom of the cooker corresponding to each sampling moment can be recorded as T 11 、T 12、T 13 …T 1n .

[0058] Step 302 : For each monitoring moment, the average temperature of the cooker bottom corresponding to a preset number of sampling moments before the monitoring moment is determined as the cooker bottom temperature corresponding to the monitoring moment.

[0059] In practice, when measuring the temperature of the cooker bottom, environmental changes and whether the contact with the cooker bottom is sufficient will affect the accuracy of the cooker bottom temperature. To address the fluctuation of the cooker bottom temperature, the average temperature of the cooker bottom temperature corresponding to a preset number of sampling moments before the monitoring moment can be determined as the cooker bottom temperature corresponding to the monitoring moment, so as to reduce the temperature fluctuation. For example, the cooker bottom temperature T collected within the first second after the start of the collection can be used as the average temperature of the cooker bottom temperature. 11 、T 12 、T 13 …T 1n The average value of is determined as the bottom temperature T1 of the cooker corresponding to the monitoring time 1s. The bottom temperature T 21 、T 22 、T 23 …T 2n The average value is determined as the stove bottom temperature T2 corresponding to the monitoring time 2s, and so on.

[0060] Step 202 : Determine the heat capacity of the bottom of the cooker corresponding to each monitoring moment according to the temperature of the bottom of the cooker, a preset amplification factor, and a preset temperature change monitoring time.

[0061] During implementation, when the food in the cooker is heated, the water evaporates and takes away the heat. When the water is completely dried up, there is no water vapor to take away the heat, and the food or the bottom of the cooker quickly heats up, resulting in a temperature mutation. The heat capacity of the bottom of the cooker is a physical quantity that measures temperature changes. Therefore, the heat capacity of the bottom of the cooker corresponding to each monitoring moment can be determined based on the temperature of the bottom of the cooker, the preset amplification coefficient, and the preset temperature change monitoring time. Among them, the preset amplification coefficient can reduce the calculation effect caused by the temperature decimal point during the calculation process. When the food is not burned or the contact is poor, the heat capacity is small in the early stage of rapid temperature rise. When thermal equilibrium is formed, the temperature change is small and the heat capacity becomes larger. The slope of heat capacity and temperature rise is an inverse relationship.

[0062] As an optional implementation, Figure 4 This is a flow chart of a method for determining the heat capacity of the bottom of a cooker provided in an embodiment of the present application, as shown in FIG. Figure 4 As shown, in step 202, the specific steps of determining the heat capacity of the bottom of the cooker corresponding to each monitoring moment according to the temperature of the bottom of the cooker, the preset amplification factor, and the preset temperature change monitoring time are as follows:

[0063] Step 401 : for each monitoring moment, query the first cookware bottom temperature corresponding to the monitoring moment and the second cookware bottom temperature corresponding to the monitoring moment before the monitoring moment and the preset temperature change monitoring time interval.

[0064] During implementation, at each monitoring moment, the cooktop controller can query the first cooktop bottom temperature corresponding to that monitoring moment, as well as the second cooktop bottom temperature corresponding to the monitoring moment that occurred at a preset temperature change monitoring time interval before that monitoring moment. For example, if the current monitoring moment is 12:00:00, the corresponding first cooktop bottom temperature is T1, and the preset temperature change monitoring time interval is 30 seconds, then the monitoring moment that occurred at the preset temperature change monitoring time interval before that monitoring moment is 11:59:30, and the corresponding second cooktop bottom temperature is T2.

[0065] Step 402 : Determine the heat capacity of the bottom of the cooker corresponding to the monitoring moment based on the first cooker bottom temperature, the second cooker bottom temperature, a preset temperature change monitoring time, and a preset amplification factor.

[0066] In implementation, the heat capacity of the cooker bottom is the inverse of the temperature rise rate, so the controller can determine the heat capacity of the cooker bottom corresponding to the monitoring moment according to the first cooker bottom temperature, the second cooker bottom temperature and a preset amplification factor.

[0067] As an optional implementation, in step 402, the formula for determining the heat capacity of the bottom of the cooker corresponding to the monitoring moment is as follows based on the first cooker bottom temperature, the second cooker bottom temperature, and a preset amplification factor:

[0068] Q=KΔt / (T p -T q );

[0069] Where Q is the heat capacity of the bottom of the cooker, K is the preset amplification factor, Δt is the preset temperature change monitoring time, T p is the bottom temperature of the first cooker, T q This is the bottom temperature of the second cooker.

[0070] In practice, the temperature at the bottom of the stove can be recorded as T1, T2, T3...T n , taking the adjacent monitoring moments as 1s and the preset temperature change monitoring time as 10s, the controller can calculate the heat capacity of the bottom of the cooker starting from 11 seconds. The controller can calculate the heat capacity of the bottom of the cooker at the 11th second monitoring moment Q1=10K / (T 11 -T1), the heat capacity of the bottom of the cooker at the 12th second monitoring time Q2=10K / (T 12 -T2), the heat capacity of the bottom of the cooker at the 13th second monitoring time Q3=10K / (T 13-T3), and so on, the heat capacity of the bottom of the cooker corresponding to each monitoring moment can be determined.

[0071] Optionally, the preset temperature change monitoring time range is preferably 10-60 seconds, and the preset amplification factor is preferably 10,000.

[0072] As an optional embodiment, before determining the heat capacity of the cooker bottom corresponding to each monitoring moment based on the cooker bottom temperature, a preset amplification factor, and a preset temperature change monitoring time, the method further includes the following steps:

[0073] Perform arithmetic average filtering on the cooker bottom temperature corresponding to each monitoring moment.

[0074] In practice, during dry-boil protection, the cooker bottom temperature fluctuates within a certain range. To reduce interference fluctuations and enhance the characteristic trend, an arithmetic average filter can be applied to the cooker bottom temperature at each monitoring moment. For example, an arithmetic average filter can be used to average the cooker bottom temperature at two points with a 30-second interval, ensuring a monotonic smoothing phase in the cooker bottom temperature trend.

[0075] Optionally, since the processed cooker bottom temperature has a hysteresis due to the smoothing filter, when subsequently calculating the heat capacity of the cooker bottom, the heat capacity value of the cooker bottom may be calculated after the temperature is measured for a preset time period.

[0076] Step 203 : When the temperature and heat capacity of the bottom of the cooker meet the preset dry-boil protection conditions, the dry-boil protection is activated.

[0077] In practice, since there's no perfect fit between the cookware base and the sensor, there's thermal resistance between them during heat transfer. If the temperature sensor is highly accurate, dry-boil protection can be implemented based on time and absolute values. Due to potential errors and the fact that the same dry-boil protection determination method can't be used for different cooking methods, the dry-boil protection condition can be determined based on the changes in the cookware base temperature and heat capacity under different cooking methods. Cooking methods include boiling, stewing, stir-frying, and deep-frying.

[0078] As an optional embodiment, the preset dry-burn protection condition is an empty-burn dry-burn protection condition. In step 203, when the temperature and heat capacity of the bottom of the cooker meet the preset dry-burn protection condition, the specific method of starting the dry-burn protection is as follows:

[0079] If the temperature of the bottom of the cooker is greater than a preset first temperature threshold; and

[0080] The heat capacity of the bottom of the cooker is less than a preset first heat capacity threshold; and

[0081] If the duration is greater than or equal to a preset first duration threshold, it is determined that the temperature and heat capacity of the bottom of the cooker meet the dry-boiling protection conditions, and the dry-boiling protection is activated.

[0082] During dry-boiling, the cooker absorbs a large amount of heat, while the contact temperature sensor receives a smaller proportion. The cooker's temperature rises faster than the contact temperature sensor's, as the cooker transfers heat to the contact temperature sensor. Due to the thermal resistance between the cooker and the contact temperature sensor, a temperature difference occurs. During dry-boiling, the cooker's bottom temperature continues to rise. If the cooker's bottom temperature is greater than a preset first temperature threshold, its bottom heat capacity is less than a preset first heat capacity threshold, and the duration of this condition is greater than or equal to the preset first duration threshold, then the cooker's bottom temperature and bottom heat capacity meet the dry-boiling protection conditions. For example, if the cooker's bottom temperature is greater than 210°C and its bottom heat capacity is less than 800°C for more than 5 seconds, then the cooker is considered dry-boiling and the dry-boiling protection should be activated.

[0083] As an optional embodiment, the preset dry-burn protection condition is a steaming dry-burn protection condition. In step 203, when the temperature and heat capacity of the bottom of the cooker meet the preset dry-burn protection condition, the specific method of starting the dry-burn protection is as follows:

[0084] If the maximum heat capacity of the bottom of the cooker is greater than a preset second heat capacity threshold; and

[0085] The heat capacity of the bottom of the cooker is less than a preset third heat capacity threshold; and

[0086] The duration is greater than or equal to a preset second duration threshold; and

[0087] If the difference between the cooker bottom temperature and the preset initial dry-boiling temperature is greater than or equal to a preset second temperature threshold, it is determined that the cooker bottom temperature and the cooker bottom heat capacity meet the steaming dry-boiling protection condition, and the dry-boiling protection is activated.

[0088] During implementation, when food is steaming in the cooker, the contact temperature sensor absorbs heat from the environment over a long period of time, and evaporation within the cooker continuously removes heat. The temperature of the contact temperature sensor is higher than that of the cooker, and the contact temperature sensor transfers heat to the cooker. If the maximum heat capacity of the cooker bottom is greater than a preset second heat capacity threshold, and the heat capacity of the cooker bottom is less than a preset third heat capacity threshold, and the duration is greater than or equal to a preset second duration threshold, and the difference between the cooker bottom temperature and the preset initial dry-boil temperature is greater than or equal to a preset second temperature threshold, then the cooker bottom temperature and the cooker bottom heat capacity are determined to meet the steam-dry-boil protection conditions. For example, if the maximum heat capacity of the cooker bottom is greater than 3500, it is determined that there is water in the cooker and it may boil. After boiling dry, the temperature rises rapidly, and the heat capacity of the cooker bottom decreases. When the heat capacity of the cooker bottom is less than 2000, it is determined to enter a dry-boil state. If this state persists for 60 seconds and the cooker bottom temperature is 75 degrees Celsius higher than the initial dry-boil temperature, dry-boil protection can be activated.

[0089] As an optional embodiment, the preset dry burn protection condition is a cooking dry burn protection condition. In step 203, when the temperature and heat capacity of the bottom of the cooker meet the preset dry burn protection condition, the specific method of starting the dry burn protection is as follows:

[0090] If the temperature of the bottom of the cookware is greater than a preset third temperature threshold; and,

[0091] The heat capacity of the bottom of the cooker is less than a preset second heat capacity threshold; and

[0092] If the difference between the cooker bottom temperature and the preset initial dry-burning temperature is greater than or equal to a preset fourth temperature threshold, it is determined that the cooker bottom temperature and the cooker bottom heat capacity meet the cooking dry-burning protection condition, and the dry-burning protection is activated.

[0093] In practice, due to the high cooking temperature, the heat capacity of the cooker bottom decreases and falls below the preset second heat capacity threshold. However, when the user stirs the food in the cooker, the bottom temperature decreases and the heat capacity increases. Traditional cooking requires higher temperatures, and a dry burn protection temperature that is too low may cause the dry burn protection to shut down, which is not suitable for user habits. Therefore, the dry burn protection temperature for cooking can be appropriately increased. Therefore, if the cooker bottom temperature is greater than the preset third temperature threshold; the heat capacity of the cooker bottom is less than the preset second heat capacity threshold; and the difference between the cooker bottom temperature and the preset initial dry burn temperature is greater than or equal to the preset fourth temperature threshold, then the cooker bottom temperature and heat capacity are determined to meet the dry burn protection conditions for cooking. For example: when the temperature at the bottom of the cooker exceeds 300 degrees Celsius, when rapid heating is detected, that is, the heat capacity of the bottom of the cooker decreases, the water evaporates when cooking before entering the rapid heating process. Before this, there is a slow heating process. At this time, compared with the steaming method, increasing the temperature by 75 degrees can ensure that even if the steaming conditions are met when cooking, the dry burning protection will not be triggered at a lower temperature.

[0094] As an optional embodiment, the preset dry burn protection condition is a deep-frying dry burn protection condition. In step 203, when the temperature and heat capacity of the bottom of the cooker meet the preset dry burn protection condition, the specific method of starting the dry burn protection is as follows:

[0095] If the temperature of the bottom of the cookware is greater than a preset fifth temperature threshold; and,

[0096] The heat capacity of the bottom of the cooker is less than a preset fourth heat capacity threshold; and

[0097] If the duration is greater than or equal to a preset third duration threshold, it is determined that the temperature and heat capacity of the bottom of the cooker meet the frying dry protection condition, and the frying dry protection is activated.

[0098] In practice, deep-frying has no inflection point and is also waterless cooking. Because the oil temperature rises slowly, the higher the temperature, the more heat is dissipated to the environment, resulting in a decreasing temperature rise, which clearly distinguishes the heat capacity from dry cooking. Therefore, a fifth temperature threshold, a fourth heat capacity threshold, and a third duration threshold can be preset. If the cooker bottom temperature is greater than the preset fifth temperature threshold, the cooker bottom heat capacity is less than the preset fourth heat capacity threshold, and the duration is greater than or equal to the preset third duration threshold, the cooker bottom temperature and heat capacity meet the frying dry protection conditions, and dry cooking protection is activated.

[0099] As an optional implementation, Figure 5 This is a flow chart of an example of a method for preventing dry burning of a stove provided in an embodiment of the present application, such as Figure 5 The specific steps are as follows:

[0100] Preset characteristic thresholds corresponding to each cooking method and collect the temperature of the bottom of the cooker;

[0101] Perform algorithmic averaging filtering on the temperature at the bottom of the cooker;

[0102] Calculate the heat capacity of the bottom of the cooker, and identify the inflection point and determine the protection mode based on the heat capacity, temperature and change of the bottom of the cooker;

[0103] If the dry-burn protection conditions are met, the dry-burn protection is activated;

[0104] If the dry-burning protection condition is not met, determine whether the steaming dry-burning protection condition is met;

[0105] If the cooking dry protection conditions are met, the dry protection will be activated;

[0106] If the steaming dry burning protection condition is not met, determine whether the cooking dry burning protection condition is met;

[0107] If the cooking dry-burn protection conditions are met, the dry-burn protection will be activated;

[0108] If the cooking dry protection conditions are not met, continue to collect the temperature of the bottom of the cooker.

[0109] The embodiments of the present application provide a method for preventing dry burning of stoves. The technical solutions provided by the embodiments of the present application bring at least the following beneficial effects: after the stove is ignited, the temperature of the bottom of the cooker corresponding to each monitoring moment is obtained; the heat capacity of the bottom of the cooker corresponding to each monitoring moment is determined according to the temperature of the bottom of the cooker, a preset amplification coefficient and a preset temperature change monitoring time; when the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry burning protection conditions, the dry burning protection is started. The present application adopts a contact temperature sensor to achieve dry burning prevention under conditions of large temperature measurement deviation. Compared with traditional dry burning prevention methods, it automatically identifies the cooking stage and implements different dry burning protection according to different cooking modes to achieve diversity, and different dry burning protection points can be set. In addition, the present application is a software method, and there is no additional cost for stove modification.

[0110] It should be understood that although Figures 2 to 5 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. In addition, Figures 2 to 5 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The order of execution of these steps or stages is not necessarily one by one, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0111] It can be understood that the same / similar parts between the various embodiments of the above method in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments. For related parts, please refer to the description of other method embodiments.

[0112] In one embodiment, a computer device is provided, such as Figure 6 As shown, it includes a memory and a processor, the memory stores a computer program that can be run on the processor, and the processor implements the above-mentioned image processing method steps when executing the computer program.

[0113] In one embodiment, a computer-readable storage medium stores a computer program, which implements the steps of the above-mentioned image processing method when executed by a processor.

[0114] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0115] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0116] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display, data for analysis, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0117] Each embodiment in this specification is described in a related manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiment is generally similar to the method embodiment, so the description is relatively simple. For related parts, refer to the description of the method embodiment.

[0118] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A method for preventing dry burning of a stove, characterized in that: The method comprises: After the cooker is ignited, the bottom temperature of the cooker corresponding to each monitoring moment is obtained; determining the heat capacity of the bottom of the cooker corresponding to each monitoring moment according to the temperature of the bottom of the cooker, a preset amplification factor, and a preset temperature change monitoring time; When the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry-boiling protection conditions, the dry-boiling protection is activated; The preset dry-burn protection condition is an empty-burn dry-burn protection condition. When the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry-burn protection condition, the dry-burn protection is activated, including: If the temperature of the bottom of the cooker is greater than a preset first temperature threshold; and The heat capacity of the bottom of the cooker is less than a preset first heat capacity threshold; and If the duration is greater than or equal to a preset first duration threshold, it is determined that the temperature and heat capacity of the bottom of the cooker meet the dry-boiling protection condition, and the dry-boiling protection is activated; The preset dry-burn protection condition is a steaming dry-burn protection condition. When the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry-burn protection condition, the dry-burn protection is activated, including: If the maximum heat capacity of the bottom of the cooker is greater than a preset second heat capacity threshold; and The heat capacity of the bottom of the cooker is less than a preset third heat capacity threshold; and The duration is greater than or equal to a preset second duration threshold; and If the difference between the cooker bottom temperature and the preset initial dry-boiling temperature is greater than or equal to a preset second temperature threshold, it is determined that the cooker bottom temperature and the heat capacity of the cooker bottom meet the cooking dry-boiling protection condition, and the dry-boiling protection is activated; The preset dry-burn protection condition is a cooking dry-burn protection condition. When the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry-burn protection condition, the dry-burn protection is activated, including: If the temperature of the bottom of the cooker is greater than a preset third temperature threshold; and The heat capacity of the bottom of the cooker is less than a preset second heat capacity threshold; and If the difference between the cooker bottom temperature and the preset initial dry-boiling temperature is greater than or equal to a preset fourth temperature threshold, it is determined that the cooker bottom temperature and the heat capacity of the cooker bottom meet the dry-boiling protection condition, and the dry-boiling protection is activated; The preset dry-burn protection condition is a frying dry-burn protection condition. When the temperature of the bottom of the cooker and the heat capacity of the bottom of the cooker meet the preset dry-burn protection condition, the dry-burn protection is activated, including: If the temperature of the bottom of the cooker is greater than a preset fifth temperature threshold; and The heat capacity of the bottom of the cooker is less than a preset fourth heat capacity threshold; and If the duration is greater than or equal to a preset third duration threshold, it is determined that the temperature and heat capacity of the bottom of the cooker meet the deep-frying dry protection condition, and the deep-frying dry protection is activated.

2. The method according to claim 1, characterized in that The step of obtaining the cooker bottom temperature corresponding to each monitoring moment includes: The temperature of the bottom of the cooker corresponding to each sampling moment is collected at a preset sampling rate; For each monitoring moment, the average temperature of the cooker bottom corresponding to a preset number of sampling moments before the monitoring moment is determined as the cooker bottom temperature corresponding to the monitoring moment.

3. The method according to claim 1, characterized in that Before determining the heat capacity of the cooker bottom corresponding to each monitoring moment based on the cooker bottom temperature, a preset amplification factor, and a preset temperature change monitoring duration, the method further includes: Perform arithmetic average filtering on the cooker bottom temperature corresponding to each monitoring moment.

4. The method according to claim 1, characterized in that The determining of the heat capacity of the bottom of the cooker corresponding to each monitoring moment according to the temperature of the bottom of the cooker, a preset amplification factor, and a preset temperature change monitoring time includes: For each monitoring moment, querying a first cookware bottom temperature corresponding to the monitoring moment and a second cookware bottom temperature corresponding to a monitoring moment before the monitoring moment and separated from the monitoring moment by the preset temperature change monitoring time period; The heat capacity of the cooker bottom corresponding to the monitoring moment is determined according to the first cooker bottom temperature, the second cooker bottom temperature, the preset temperature change monitoring time, and the preset amplification factor.

5. The method according to claim 4, characterized in that The formula for determining the heat capacity of the cooker bottom corresponding to the monitoring moment based on the first cooker bottom temperature, the second cooker bottom temperature, the preset temperature change monitoring time, and the preset amplification factor is: Q =KΔt / (T p -T q ); Where Q is the heat capacity of the bottom of the cooker, K is the preset amplification factor, Δt is the preset temperature change monitoring time, T p is the bottom temperature of the first cooker, T q This is the bottom temperature of the second cooker.

6. A stove, characterized in that: The cooker includes a contact temperature sensor and a controller; wherein, The contact temperature sensor is used to collect the temperature of the bottom of the cooker; The controller is configured to determine the heat capacity of the bottom of the cooker corresponding to each monitoring moment based on the temperature of the bottom of the cooker, a preset amplification factor, and a preset temperature change monitoring time; The controller is further configured to activate dry-burn protection when the temperature of the cooker bottom and the heat capacity of the cooker bottom meet preset dry-burn protection conditions, thereby implementing the cooker dry-burn prevention method according to any one of claims 1 to 5.

Images