Fire control method and device of a cooking appliance, cooking appliance and storage medium

Abstract

The embodiment of the application provides a fire control method and device of a stove, the stove and a storage medium, the method comprises the following steps: obtaining a recipe and cooking according to the recipe; detecting a temperature value of a bottom of a pot in a cooking process through a temperature sensor and determining a temperature change curve according to the temperature value; when a first temperature inflection point appears in the temperature change curve, controlling an inner ring proportional valve to be closed, so that an inner ring fire divider stops outputting fire power; the first temperature inflection point is an inflection point at which the temperature change curve changes from a convex curve to a concave curve; when a second temperature inflection point appears in the temperature change curve, controlling the inner ring proportional valve to be opened and adjusting a gear of the inner ring fire divider outputting fire power; the second temperature inflection point is an inflection point at which the temperature change curve changes from the concave curve to the convex curve, so that interval heating can be performed when the first temperature inflection point is detected, the inner ring fire divider stops outputting fire power, interference of an inner ring flame on the temperature sensor is avoided, and the precision of the temperature sensor in detecting a pot bottom temperature is improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent cooktop technology, and in particular to a flame control method, device, cooktop, and storage medium for a cooktop. Background Technology

[0002] Cooking stoves are common tools in Chinese cooking, but the cooking process is relatively complicated and caters to diverse tastes. Therefore, existing technologies have proposed the concepts of smart stoves and smart recipes, guiding users through cooking by reminding them of the order and timing of ingredient addition. Precise temperature feedback is crucial when cooking with a smart stove, making heat and temperature control extremely important. Many factors influence the temperature detection results of a smart stove, including contact heat transfer factors and air heat transfer factors. Contact heat transfer factors include contact area, pot stains, and pot material, while air heat transfer factors include flame exposure and ambient temperature. Current technology cannot yet determine the decisive factors affecting temperature detection or achieve precise temperature measurement. Summary of the Invention

[0003] To address the aforementioned problems, embodiments of the present invention disclose a method, device, stove, and storage medium for controlling the flame of a stove.

[0004] In a first aspect, embodiments of the present invention provide a flame control method for a stove, the stove comprising a temperature sensor, an inner ring burner, and an inner ring proportional valve, wherein the temperature sensor is disposed at the center of the inner ring burner and in contact with the bottom of the cookware, the method comprising:

[0005] Obtain the recipe and cook according to the recipe;

[0006] The temperature sensor detects the temperature value at the bottom of the pot during cooking, and a temperature change curve is determined based on the temperature value.

[0007] When the temperature change curve reaches the first temperature inflection point, the inner ring proportional valve is controlled to close, so that the inner ring distributor stops outputting firepower; the first temperature inflection point is the point where the temperature change curve changes from a convex curve to a concave curve;

[0008] When the temperature change curve reaches a second temperature inflection point, the inner ring proportional valve is opened, and the output firepower of the inner ring distributor is adjusted; the second temperature inflection point is the inflection point where the temperature change curve changes from a concave curve to a convex curve.

[0009] Optionally, the stove further includes an outer ring burner and an outer ring proportional valve, and the method further includes:

[0010] Determine the cooking time during the cooking process;

[0011] Based on the cooking time, the output power of the outer ring burner is adjusted via the outer ring proportional valve.

[0012] Optionally, the recipe includes ingredient information and a correspondence between the ingredient information and a preset cooking time, and the cooking according to the recipe includes:

[0013] When the cooking time reaches the preset cooking time, based on the correspondence between the ingredient information and the preset cooking time, the required ingredient information for the preset cooking time is output, and intelligent ingredient delivery or manual delivery reminder is given.

[0014] Optionally, the temperature sensor includes a temperature probe, a first resistor, and a second resistor. The temperature probe is connected to the first resistor or the second resistor and is in contact with the bottom of the cookware. Detecting the temperature value of the bottom of the cookware during cooking using the temperature sensor includes:

[0015] When the temperature value is less than a preset temperature threshold, the temperature probe is connected to the first resistor, and the temperature value of the bottom of the pot is determined based on the first resistor.

[0016] When the temperature value is greater than the preset temperature threshold, the temperature probe is connected to the second resistor, and the temperature value of the bottom of the pot is determined based on the second resistor.

[0017] Optionally, the method further includes:

[0018] Obtain the dry burning threshold;

[0019] When the temperature reaches the dry burning threshold, the inner ring proportional valve and the outer ring proportional valve are closed to stop the inner ring burner and the outer ring burner from outputting firepower and to output an alarm message.

[0020] Optionally, the method further includes:

[0021] If the difference between the cooking time and the preset cooking time is greater than a preset time threshold, and if the first temperature inflection point is not detected, it is determined that the ingredients corresponding to the ingredient information have not been added.

[0022] When the ingredients corresponding to the ingredient information are not added, an alarm message is output, and the output power of the inner ring distributor is reduced through the inner ring proportional valve, and / or the output power of the outer ring distributor is reduced through the outer ring proportional valve.

[0023] Optionally, before obtaining the recipe, the method further includes:

[0024] When the opening of the inner ring proportional valve or the outer ring proportional valve is detected, a start query message is output;

[0025] If no confirmation message is received from the user regarding the start-up inquiry within the preset detection time, it is determined that the stove has been mistakenly started, and the inner ring proportional valve and the outer ring proportional valve are closed.

[0026] Secondly, embodiments of the present invention provide a flame control device for a stove, the stove including a temperature sensor, an inner ring burner, and an inner ring proportional valve, the temperature sensor being disposed at the center of the inner ring burner and in contact with the bottom of the pot, the device comprising:

[0027] The recipe acquisition and cooking module is used to acquire recipes and cook according to the recipes.

[0028] The temperature curve determination module is used to detect the temperature value of the bottom of the pot during cooking through the temperature sensor, and determine the temperature change curve based on the temperature value;

[0029] The inner ring firepower shutdown module is used to control the inner ring proportional valve to close when the temperature change curve reaches the first temperature inflection point, so that the inner ring fire distributor stops outputting firepower; the first temperature inflection point is the inflection point where the temperature change curve changes from a convex curve to a concave curve;

[0030] The inner ring firepower activation module is used to control the inner ring proportional valve to open and adjust the output firepower level of the inner ring fire distributor when the temperature change curve reaches the second temperature inflection point; the second temperature inflection point is the inflection point where the temperature change curve changes from a concave curve to a convex curve.

[0031] Optionally, the stove further includes an outer ring burner and an outer ring proportional valve, and the device further includes:

[0032] The cooking time determination module is used to determine the cooking time during the cooking process;

[0033] The outer ring firepower adjustment module is used to adjust the output firepower level of the outer ring burner through the outer ring proportional valve according to the cooking time.

[0034] Optionally, the recipe includes ingredient information and a correspondence between the ingredient information and a preset cooking time. The recipe acquisition and cooking module includes:

[0035] The recipe acquisition submodule is used to output the information of the ingredients to be added under the preset cooking time according to the correspondence between the ingredient information and the preset cooking time when the cooking time reaches the preset cooking time, and to perform intelligent addition or remind manual addition.

[0036] Optionally, the temperature sensor includes a temperature probe, a first resistor, and a second resistor. The temperature probe is connected to either the first or second resistor and contacts the bottom of the cookware. The temperature curve determination module includes:

[0037] The first temperature change curve determination submodule is used to connect the temperature probe to the first resistor when the temperature value is less than a preset temperature threshold, and determine the temperature value of the bottom of the pot based on the first resistor.

[0038] The second temperature change curve determination submodule is used to connect the temperature probe to the second resistor when the temperature value is greater than the preset temperature threshold, and determine the temperature value of the bottom of the pot based on the second resistor.

[0039] Optionally, the device further includes:

[0040] The dry-burning threshold acquisition module is used to acquire the dry-burning threshold.

[0041] The first alarm information output module is used to control the inner ring proportional valve and the outer ring proportional valve to close when the temperature value reaches the dry burning threshold, so that the inner ring burner and the outer ring burner stop outputting firepower and output alarm information.

[0042] Optionally, the recipe acquisition and cooking module further includes:

[0043] The ingredient addition determination submodule is used to determine that the ingredients corresponding to the ingredient information have not been added when the difference between the cooking time and the preset cooking time is greater than a preset time threshold and the first temperature inflection point is not detected.

[0044] The firepower reduction submodule is used to output an alarm message when the ingredients corresponding to the ingredient information are not added, and to reduce the firepower output of the inner ring distributor through the inner ring proportional valve, and / or to reduce the firepower output of the outer ring distributor through the outer ring proportional valve.

[0045] Optionally, prior to the recipe acquisition cooking module, the device further includes:

[0046] The start-up inspection module is used to output start-up query information when the inner ring proportional valve or the outer ring proportional valve is detected to be open.

[0047] The fire shut-off module is used to determine that the stove has been mistakenly started if no start confirmation information is received from the user in response to the start inquiry within a preset detection time, and to shut down the inner ring proportional valve and the outer ring proportional valve.

[0048] Thirdly, the present invention discloses a stove, comprising:

[0049] One or more processors; and

[0050] One or more machine-readable media storing instructions thereon, which, when executed by the one or more processors, cause the cooktop to perform a cooktop fire control method as described in any of the preceding claims.

[0051] Fourthly, the present invention discloses a computer-readable storage medium having instructions stored thereon that, when executed by one or more processors, cause the processors to perform a flame control method for a stove as described in any of the preceding claims.

[0052] The embodiments of the present invention have the following advantages:

[0053] This invention provides a method for controlling the flame of a stove by acquiring a recipe and providing cooking prompts based on the recipe; detecting the temperature of the bottom of the pot during cooking using a temperature sensor and obtaining a temperature change curve based on the temperature value; when the temperature change curve reaches a first temperature inflection point, controlling the inner ring proportional valve to close, so that the inner ring burner stops outputting heat; the first temperature inflection point is the point where the temperature change curve changes from a convex curve to a concave curve; when the temperature change curve reaches a second temperature inflection point, controlling the inner ring proportional valve to open and adjusting the heat output level of the inner ring burner; the second temperature inflection point is the point where the temperature change curve changes from a concave curve to a convex curve. This invention's stove flame control method determines that the temperature of the inner ring flame has a significant impact on the temperature detection of the bottom of the pot. By closing the inner ring proportional valve when the temperature change curve detects an inflection point where it changes from a convex curve to a concave curve, the inner ring burner stops outputting heat, avoiding interference from the inner ring flame to the temperature sensor, thereby improving the accuracy of the temperature sensor in detecting the bottom temperature of the pot. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This is a flowchart illustrating the steps of a fire control method for a stove according to an embodiment of the present invention;

[0056] Figure 2 This is a structural diagram of a stove according to an embodiment of the present invention;

[0057] Figure 3 This is a flowchart illustrating the steps of another fire control method for a stove according to an embodiment of the present invention;

[0058] Figure 4This is a temperature change curve of a fire control method for a stove according to an embodiment of the present invention;

[0059] Figure 5 This is a structural block diagram of a fire control device for a stove according to an embodiment of the present invention.

[0060] Explanation of reference numerals in the attached figures:

[0061] Temperature sensor 11, inner ring igniter 12, outer ring igniter 13. Detailed Implementation

[0062] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0063] This invention, through experiments conducted by arranging temperature measuring points on both the inner and outer sides of the temperature sensor probe, as well as on the outer and inner walls of the pot, revealed a strong correlation between the temperature probe data and the temperatures at the bottom and inside of the pot, despite differences in magnitude. This ruled out the influence of contact heat transfer. However, significant differences in temperature data were observed when both the inner and outer rings were heated simultaneously. Further analysis revealed that heating only the outer ring resulted in better data consistency, while heating only the inner ring resulted in greater temperature discrepancies. Therefore, it was determined that the inner ring flame of the stove causes inaccurate temperature readings of the pot's bottom from the stove's temperature probe. To address this issue, this invention provides a stove flame control method, also known as a zone heating method. This method uses a temperature sensor to detect the temperature at the bottom of the pot during cooking and determines a temperature change curve based on this value. When the temperature change curve reaches an inflection point where it transitions from a convex to a concave curve, the inner ring flame is extinguished. This prevents interference from the inner ring flame with the temperature sensor during precise temperature measurement, improving the accuracy of the temperature sensor in detecting the pot's bottom temperature.

[0064] Reference Figure 1 The diagram illustrates a step-by-step flowchart of a flame control method for a stove according to an embodiment of the present invention. (Refer to...) Figure 2 The diagram illustrates the structure of a stove according to an embodiment of the present invention. The stove includes a temperature sensor 11, an inner ring burner 12, and an outer ring burner 13. The stove also includes an inner ring proportional valve and an outer ring proportional valve. The temperature sensor is located at the center of the inner ring burner and contacts the bottom of the cookware. The method may specifically include the following steps:

[0065] Step 101: Obtain the recipe and cook according to the recipe;

[0066] In this embodiment of the invention, the stove can be a smart stove, and the recipe can be a smart recipe. The smart stove can be equipped with a controller to control its intelligent operation. The controller can communicate with a smart cooking service center to download smart recipes from the center. Simultaneously, the controller can also retrieve recipes pre-stored by the user from the smart stove's memory. After receiving the user's selected recipe instruction, the controller can perform cooking according to the smart recipe. During cooking, the controller can read the correspondence between the information of the ingredients to be added and the cooking time based on the user-selected recipe, reminding the user to add the ingredients at the corresponding cooking time.

[0067] The smart cooktop in this embodiment of the invention also includes a display and a speaker for displaying images and playing sounds. The display can be a touch screen for receiving touch commands from the user. In addition to displaying ingredient information, the display can also display one or more of the following data in real time during the cooking process: gas consumption, energy consumption, temperature, range hood airflow, cooking time, etc.

[0068] Smart cooktops also include pot supports for holding cookware. The size of the cookware compatible with the smart cooktop can be determined based on the size of the pot support. For example, the pot support dimensions can be 650mm*450mm*50mm, with a center dimension of 450mm*430mm. A larger pot support provides better stability and load-bearing capacity, ensuring a secure connection between the cooktop and the pot support and reducing the risk of wobbling and tilting. However, an oversized pot support will extend beyond the cooktop's boundaries, affecting aesthetics and posing a safety hazard. An undersized pot support will lack sufficient stability and load-bearing capacity, leading to instability of the cooktop or imbalance of the cookware. Therefore, choosing a pot support of the appropriate size ensures a good match between the cooktop and the cooktop.

[0069] Smart cooktops also include a control panel, which houses the burner and pot supports. Control panel materials include stainless steel, ceramic, tempered glass, and more.

[0070] Step 102: Detect the temperature value of the bottom of the pot during cooking using the temperature sensor, and determine the temperature change curve based on the temperature value;

[0071] In this embodiment of the invention, the controller can detect the temperature of the bottom of the pot during cooking using a temperature sensor, and use the calculator in the smart stove to plot the relationship between the temperature of the bottom of the pot and time as a temperature change curve. The sensor converts physical quantities into electrical signals through a circuit, and transmits them to the circuit for processing and analysis, thereby generating feedback to achieve functions such as control and detection. Specifically, the sensor can generate an analog electrical signal or a digital signal, while the circuit can collect these signals and perform simple processing, filtering, amplification, digitization, etc., to generate signals or data for analysis, and output them to other devices or to people's field of vision.

[0072] Step 103: When the temperature change curve reaches the first temperature inflection point, control the inner ring proportional valve to close so that the inner ring fire distributor stops outputting firepower; the first temperature inflection point is the inflection point where the temperature change curve changes from a convex curve to a concave curve.

[0073] In this embodiment of the invention, when precise temperature measurement is required, to prevent the inner ring flame from interfering with the temperature sensor, the controller can close the inner ring proportional valve, thereby stopping the inner ring burner from outputting heat. For example, the decision to close the inner ring burner can be determined by the temperature change curve. Specifically, when new ingredients are added to the pot, the temperature sensor detects a sudden drop in temperature at the bottom of the pot, causing the temperature change curve to change from a convex curve to a concave curve. At this point, the controller can use a differential algorithm to determine the first temperature inflection point in the temperature change curve, thereby controlling the inner ring proportional valve to close, stopping the inner ring burner from outputting heat, and preventing the inner ring flame from interfering with the temperature sensor.

[0074] The burner, also known as the flame diffuser, is installed on the surface of the stove and is the part that has the longest contact with the flame. It plays a role in dispersing the gas-fuel mixture and ensuring that the air and fuel are fully mixed for optimal combustion. The burner typically has multiple holes inside, allowing air to enter and mix thoroughly with the fuel. The shape and structure of the burner affect the flame distribution. A well-designed burner can make the flame more even and stable, preventing it from concentrating in one area and improving cooking results. The number and size of the holes in the burner can adjust the flame size. The internal design of the holes ensures that the flame is directed upwards, preventing backflow.

[0075] The intelligent recipes include stir-frying, rice cooking, steaming, and more. Taking crispy rice as an example, the rice needs to be soaked in water first. Once the rice has fully absorbed water (below 60 degrees Celsius), it's quickly heated until the water boils to 100 degrees Celsius and the rice is cooked. Before the water evaporates, the temperature at the bottom of the pot is 100 degrees Celsius. After the water evaporates, the temperature rises rapidly, and the rice at the bottom is crispy. Heating should be stopped at around 200 degrees Celsius, as higher temperatures will burn the rice. Steaming requires precise timing of the water boiling. Stir-frying requires adding various ingredients according to the recipe, controlling the heat, and performing other operations at specific temperature points, such as adding salt, soy sauce, or water. All of these operations require accurate temperature detection of the pot bottom.

[0076] Step 104: When the temperature change curve reaches a second temperature inflection point, control the inner ring proportional valve to open and adjust the output firepower level of the inner ring distributor; the second temperature inflection point is the inflection point where the temperature change curve changes from a concave curve to a convex curve.

[0077] In this embodiment of the invention, when new ingredients are added to the pot, the temperature sensor detects a rise in the temperature of the bottom component of the pot due to the heating effect of the outer ring flame. The temperature change curve changes from a convex curve to a concave curve. At this point, the controller can determine the second temperature inflection point in the temperature change curve using a differential algorithm, thereby controlling the inner ring proportional valve to open and adjusting the output power of the inner ring burner to assist the outer ring flame in heating the pot. It should be noted that the first and second temperature inflection points describe one type of inflection point; there can be multiple first and second temperature inflection points in the temperature change curve.

[0078] In this embodiment of the invention, a smart cooktop controller can acquire smart recipes and provide cooking prompts based on these recipes. A temperature sensor detects the temperature of the bottom of the pot during cooking and obtains a temperature change curve. When the temperature change curve reaches a first temperature inflection point, the inner ring proportional valve is closed to stop the inner ring burner from outputting heat. The first temperature inflection point is the point where the temperature change curve changes from a convex curve to a concave curve. When the temperature change curve reaches a second temperature inflection point, the inner ring proportional valve is opened, and the heat output level of the inner ring burner is adjusted. The second temperature inflection point is the point where the temperature change curve changes from a concave curve to a convex curve. The cooktop flame control method provided by this invention determines that the temperature of the inner ring flame significantly affects the temperature detection of the bottom of the pot. By closing the inner ring proportional valve when the temperature change curve changes from a convex curve to a concave curve, the inner ring burner stops outputting heat, preventing the inner ring flame from interfering with the temperature sensor and thus improving the accuracy of the temperature sensor in detecting the bottom temperature of the pot.

[0079] Reference Figure 3This diagram illustrates a flowchart of another flame control method for a cooktop according to an embodiment of the present invention. The cooktop includes a temperature sensor, an inner ring burner, an inner ring proportional valve, an outer ring burner, and an outer ring proportional valve. The temperature sensor is located at the center of the inner ring burner and is in contact with the bottom of the cookware. The method may specifically include the following steps:

[0080] Step 201: Obtain the recipe and cook according to the recipe;

[0081] In an optional embodiment of the present invention, before acquiring the smart recipe, the method further includes: when the inner ring proportional valve or the outer ring proportional valve is detected to be open, outputting a start-up inquiry message; if no start-up confirmation message is received from the user in response to the start-up inquiry message within a preset detection time, it is determined that the stove has been mistakenly started, and the inner ring proportional valve and the outer ring proportional valve are closed.

[0082] In this embodiment of the invention, the smart stove can be equipped with a controller to control its intelligent operation. The controller can communicate with a smart cooking service center to download smart recipes from the service center. Simultaneously, the controller can also retrieve recipes pre-stored by the user from the smart stove's memory. After receiving the user's selected recipe instruction, the controller can cook according to the smart recipe. Furthermore, since uncontrolled fire could cause a fire, this invention includes a detection device to prevent accidental activation. When the smart stove is detected to have been accidentally activated, the inner and outer ring proportional valves are closed to stop the inner and outer ring burners from outputting firepower. For example, when the inner or outer ring proportional valve is detected to be open, the controller can output a start-up query message to the user through the smart stove's user interaction function and wait for the user's confirmation. If the user inputs a start-up confirmation message within a preset detection time, the stove operates normally. If no start-up confirmation message is received from the user within the preset detection time, it is determined that the stove has been accidentally activated, and the inner and outer ring proportional valves are closed to prevent uncontrolled fire.

[0083] Step 202: Detect the temperature value of the bottom of the pot during cooking using the temperature sensor, and determine the temperature change curve based on the temperature value;

[0084] In an optional embodiment of the present invention, the temperature sensor includes a temperature probe, a first resistor, and a second resistor. The temperature probe is connected to the first resistor or the second resistor and is in contact with the bottom of the cookware. The step of detecting the temperature value of the bottom of the cookware during cooking using the temperature sensor may include the following sub-steps:

[0085] Sub-step S11: When the temperature value is less than a preset temperature threshold, connect the temperature probe to the first resistor and determine the temperature value of the bottom of the pot based on the first resistor.

[0086] In sub-step S12, when the temperature value is greater than a preset temperature threshold, the temperature probe is connected to the second resistor, and the temperature value of the bottom of the pot is determined based on the second resistor.

[0087] In this embodiment of the invention, the controller can detect the temperature value of the bottom of the pot during cooking using a temperature sensor and determine a temperature change curve based on the temperature value. The temperature sensor may include a temperature probe, a first resistor, and a second resistor. The temperature probe can be connected to either the first or second resistor and is in contact with the bottom of the pot. The higher the temperature of the bottom of the pot, the lower the resistance value of the first or second resistor. The controller can determine the temperature value of the bottom of the pot based on the correspondence between the resistance value of the first or second resistor and the temperature reading. Since the difference in sampling voltage is small within certain temperature ranges, using the same sampling resistor cannot achieve accurate temperature measurement. Therefore, the controller can use different resistors connected to the temperature probe at high and low temperatures. For example, when the temperature value is below a preset temperature threshold, the temperature probe can be connected to the first resistor; when the temperature value is above the preset temperature threshold, the temperature probe can be connected to the second resistor. For example, the preset temperature threshold can be 150 degrees Celsius. Those skilled in the art can set the preset temperature threshold to other appropriate values ​​according to the concept of this invention, and this invention does not limit this.

[0088] Step 203: When the temperature change curve reaches the first temperature inflection point, control the inner ring proportional valve to close so that the inner ring fire distributor stops outputting firepower; the first temperature inflection point is the inflection point where the temperature change curve changes from a convex curve to a concave curve.

[0089] In this embodiment of the invention, when precise temperature measurement is required, to prevent the inner ring flame from interfering with the temperature probe, the controller can close the inner ring proportional valve, thereby stopping the inner ring burner from outputting heat. For example, the decision to close the inner ring burner can be determined by the temperature change curve. Specifically, when new ingredients are added to the pot, the temperature sensor detects a sudden drop in temperature at the bottom of the pot, causing the temperature change curve to change from a convex curve to a concave curve. At this point, the controller can use a differential algorithm to determine the first temperature inflection point in the temperature change curve, thereby controlling the inner ring proportional valve to close, stopping the inner ring burner from outputting heat, and preventing the inner ring flame from interfering with the temperature probe.

[0090] Step 204: When the temperature change curve reaches a second temperature inflection point, control the inner ring proportional valve to open and adjust the output firepower level of the inner ring distributor; the second temperature inflection point is the inflection point where the temperature change curve changes from a concave curve to a convex curve.

[0091] In this embodiment of the invention, when new ingredients are added to the pot, the temperature sensor detects a rise in the temperature of the bottom component of the pot due to the heating effect of the outer ring flame. The temperature change curve changes from a convex curve to a concave curve. At this point, the controller can determine the second temperature inflection point in the temperature change curve using a differential algorithm, thereby controlling the inner ring proportional valve to open and adjusting the output power of the inner ring burner to assist the outer ring flame in heating the pot. It should be noted that the first and second temperature inflection points describe one type of inflection point; there can be multiple first and second temperature inflection points in the temperature change curve.

[0092] For example, such as Figure 4 As shown, the relationship between the output power levels of the inner and outer ring burners and the temperature curves can be illustrated below. The inner ring burner output power levels are divided into 0-4 levels, and the outer ring burner output power levels are divided into 0-12 levels. Taking cooking rice as an example:

[0093] During the 0-11 minute period, without adding any ingredients, the pot is heated internally. The inner ring proportional valve is opened, and the output power of the inner ring burner is adjusted to level 4. The outer ring proportional valve is opened, and the output power of the outer ring burner is adjusted to level 12, causing the temperature to rise to 140 degrees Celsius. The temperature change curve during this stage is a convex curve.

[0094] At 12-17 minutes, add the ingredients. As the pot cools down, close the inner ring proportional valve and adjust the outer ring burner to level 5. At this point, the temperature drops to 132 degrees Celsius. The temperature change curve during this stage is a concave curve.

[0095] At 18-20 minutes, the inside of the pot begins to heat up. The inner ring proportional valve is opened, and the output power of the inner ring burner is adjusted to level 3. The output power of the outer ring burner is kept at level 5. At this time, the temperature rises to 158 degrees Celsius. The temperature change curve at this stage is a convex curve.

[0096] Add ingredients at 21-30 minutes. If the pot does not cool down, close the inner ring proportional valve and adjust the outer ring burner to level 6. At this time, the temperature rises to 164 degrees Celsius, but the temperature rises slowly. The temperature change curve at this stage is a concave curve.

[0097] At 31-33 minutes, the pot continues to heat up. The inner ring proportional valve is opened, the inner ring burner output power is adjusted to level 3, and the outer ring burner output power is adjusted to level 5. At this time, the temperature drops to 207 degrees Celsius. The temperature change curve during this stage is a convex curve.

[0098] Add ingredients at 34-42 minutes. The pot does not cool down. Close the inner ring proportional valve and adjust the outer ring burner to level 7. At this time, the temperature rises to 2174 degrees Celsius, but the temperature rises slowly. The temperature change curve at this stage is a concave curve.

[0099] After 42 minutes, the rice cooking is complete, and the inner and outer proportional valves are closed.

[0100] Step 205: Determine the cooking time during the cooking process;

[0101] Step 206: Based on the cooking time, adjust the output power level of the outer ring burner through the outer ring proportional valve.

[0102] In an optional embodiment of the present invention, the recipe includes ingredient information and a correspondence between the ingredient information and a preset cooking time. The step of cooking according to the recipe may include the following sub-steps:

[0103] Sub-step S21: When the cooking time reaches the preset cooking time, according to the correspondence between the ingredient information and the preset cooking time, output the ingredient information to be added under the preset cooking time, and perform intelligent addition or remind manual addition.

[0104] In this embodiment of the invention, the controller can also record the cooking time during the cooking process. The intelligent recipe includes ingredient information and a correspondence between the ingredient information and a preset cooking time. When the cooking time reaches the preset cooking time, the controller can output the required ingredient information for the preset cooking time based on the correspondence between the ingredient information and the preset cooking time, to remind the user to add the ingredients or to automatically add ingredients.

[0105] In an optional embodiment of the present invention, the method may further include the following sub-steps:

[0106] Sub-step S31: If the difference between the cooking time and the preset cooking time is greater than the preset time threshold, and if the first temperature inflection point is not detected, then it is determined that the ingredients corresponding to the ingredient information have not been added.

[0107] Sub-step S32: When the ingredients corresponding to the ingredient information are not added, an alarm message is output, and the output power of the inner ring distributor is reduced through the inner ring proportional valve, and / or the output power of the outer ring distributor is reduced through the outer ring proportional valve.

[0108] In this embodiment of the invention, the controller can also detect whether the ingredients corresponding to the ingredient information have been added when the difference between the cooking time and the preset cooking time is greater than a preset time threshold. If the ingredients corresponding to the ingredient information have not been added, an alarm message is output, and the output firepower of the inner ring burner is reduced through the inner ring proportional valve, and / or the output firepower of the outer ring burner is reduced through the outer ring proportional valve, so that the smart stove can perform low-heat constant temperature heating and wait for the user's operation.

[0109] In an optional embodiment of the present invention, the method may further include: obtaining a dry-burning threshold; when the temperature value reaches the dry-burning threshold, controlling the inner ring proportional valve and the outer ring proportional valve to close, so that the inner ring burner and the outer ring burner stop outputting firepower and outputting alarm information.

[0110] In this embodiment of the invention, the controller can also determine whether the temperature at the bottom of the pot has reached the dry-burning threshold. When the temperature reaches the dry-burning threshold, it can control the inner and outer ring proportional valves to close, so that the inner and outer ring burners stop outputting heat, preventing the temperature from rising further and damaging the pot. Simultaneously, an alarm message is output to remind the user. Although a temperature curve regulates the rise and fall of temperature during cooking, dry-burning can still occur in certain situations. For example, if the recipe is incorrect, the controller may control the inner and outer ring proportional valves to remain on for an extended period, until the water boils away without turning off the flame or reducing the heat. Other situations may also lead to dry-burning. This invention can prevent serious adverse consequences caused by incorrect recipes.

[0111] In this embodiment of the invention, the intelligent stove also includes a protection device. For example, an automatic flameout protection device automatically cuts off the gas supply when the gas flame is accidentally extinguished, preventing gas leakage. The automatic flameout protection device consists of a thermocouple and a solenoid valve. The thermocouple acts as a sensor, transmitting information in the form of an electric potential to the solenoid valve after receiving heat. The solenoid valve controls the gas valve inlet to open, ensuring normal combustion of the stove. When the flame is accidentally extinguished, the electric potential generated by the thermocouple disappears, and the solenoid valve resets under the action of its own spring, blocking the gas valve inlet. Many factors in daily life can cause a gas stove to accidentally extinguish, such as strong winds, spilled soup, or unsuccessful ignition. If unattended or without a flameout protection device, gas will continue to escape after an accidental flameout, potentially causing a fire or carbon monoxide poisoning.

[0112] In addition, when a smart cooktop malfunctions, the following situations may occur: damage to the internal electrical components of the igniter, failure of the internal mechanical mechanism of the switch, short circuit in the power connection, insufficient battery power, or even no battery power or reversed battery polarity, no gas spraying from the burner, and a malfunctioning flameout device. When the internal electrical components of the igniter are damaged, try replacing it with an igniter of the same model and specification. When the internal mechanical mechanism of the switch malfunctions, repair the internal mechanical mechanism of the switch or replace the switch with one of the same specification. When the power connection is short-circuited, connect the power cord to complete the circuit. When the battery power is insufficient, or even no battery power, or the battery polarity is reversed, replace the battery or reverse the battery polarity. When no gas is spraying from the burner, check for any source of gas and clear any blockages in the pipes. When the flameout device malfunctions, replace the flameout protection device and clean the heat sensor.

[0113] In this embodiment of the invention, the cooktop controller can acquire recipes and provide cooking prompts based on the recipes; a temperature probe detects the temperature value at the bottom of the pot during cooking and obtains a temperature change curve based on the temperature value; when the temperature change curve reaches a first temperature inflection point, the inner ring proportional valve is closed to stop the inner ring burner from outputting firepower; the first temperature inflection point is the point where the temperature change curve changes from a convex curve to a concave curve; when the temperature change curve reaches a second temperature inflection point, the inner ring proportional valve is opened and the firepower output level of the inner ring burner is adjusted; the second temperature inflection point is the point where the temperature change curve changes from a concave curve to a convex curve; when the temperature value reaches the dry-burning threshold, the inner ring proportional valve and the outer ring proportional valve are closed and an alarm message is output; when the smart cooktop is accidentally started, the inner ring proportional valve and the outer ring proportional valve are closed. The fire control method for the stove provided by this invention determines that the temperature of the inner ring flame has a significant impact on the temperature detection of the bottom of the pot. By closing the inner ring proportional valve when the temperature change curve changes from a convex curve to a concave curve, the inner ring burner stops outputting firepower, thus avoiding interference from the inner ring flame to the temperature sensor. This improves the accuracy of the temperature sensor in detecting the temperature of the bottom of the pot, while also preventing dry burning and false start-ups.

[0114] It should be noted that, for the sake of simplicity, the method embodiments are all described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0115] Reference Figure 5The diagram illustrates a structural block diagram of a flame control device for a stove according to an embodiment of the present invention. The stove includes a temperature sensor, an inner ring flame distributor, and an inner ring proportional valve. The temperature sensor is located at the center of the inner ring flame distributor and contacts the bottom of the cookware. The device may specifically include the following modules:

[0116] The recipe acquisition and cooking module 301 is used to acquire recipes and cook according to the recipes.

[0117] The temperature curve determination module 302 is used to detect the temperature value of the bottom of the pot during cooking through the temperature sensor, and determine the temperature change curve based on the temperature value.

[0118] The inner ring firepower shutdown module 303 is used to control the inner ring proportional valve to close when the temperature change curve reaches the first temperature inflection point, so that the inner ring fire distributor stops outputting firepower; the first temperature inflection point is the inflection point where the temperature change curve changes from a convex curve to a concave curve.

[0119] The inner ring firepower opening module 304 is used to control the inner ring proportional valve to open and adjust the output firepower level of the inner ring fire distributor when the temperature change curve reaches the second temperature inflection point; the second temperature inflection point is the inflection point where the temperature change curve changes from a concave curve to a convex curve.

[0120] In this embodiment of the invention, the stove further includes an outer ring burner and an outer ring proportional valve, and the device further includes:

[0121] The cooking time determination module is used to determine the cooking time during the cooking process;

[0122] The outer ring firepower adjustment module is used to adjust the output firepower level of the outer ring burner through the outer ring proportional valve according to the cooking time.

[0123] In this embodiment of the invention, the recipe includes ingredient information and a correspondence between the ingredient information and a preset cooking time. The recipe acquisition cooking module 301 includes:

[0124] The recipe acquisition submodule is used to output the information of the ingredients to be added under the preset cooking time according to the correspondence between the ingredient information and the preset cooking time when the cooking time reaches the preset cooking time, and to perform intelligent addition or remind manual addition.

[0125] In this embodiment of the invention, the temperature sensor includes a temperature probe, a first resistor, and a second resistor. The temperature probe is connected to the first resistor or the second resistor and contacts the bottom of the pot. The temperature curve determination module 302 includes:

[0126] The first temperature change curve determination submodule is used to connect the temperature probe to the first resistor when the temperature value is less than a preset temperature threshold, and determine the temperature value of the bottom of the pot based on the first resistor.

[0127] The second temperature change curve determination submodule is used to connect the temperature probe to the second resistor when the temperature value is greater than the preset temperature threshold, and determine the temperature value of the bottom of the pot based on the second resistor.

[0128] In this embodiment of the invention, the device further includes:

[0129] The dry-burning threshold acquisition module is used to acquire the dry-burning threshold.

[0130] The first alarm information output module is used to control the inner ring proportional valve and the outer ring proportional valve to close when the temperature value reaches the dry burning threshold, so that the inner ring burner and the outer ring burner stop outputting firepower and output alarm information.

[0131] In this embodiment of the invention, the recipe acquisition and cooking module 301 further includes:

[0132] The ingredient addition determination submodule is used to determine that the ingredients corresponding to the ingredient information have not been added when the difference between the cooking time and the preset cooking time is greater than a preset time threshold and the first temperature inflection point is not detected.

[0133] The firepower reduction submodule is used to output an alarm message when the ingredients corresponding to the ingredient information are not added, and to reduce the firepower output of the inner ring distributor through the inner ring proportional valve, and / or to reduce the firepower output of the outer ring distributor through the outer ring proportional valve.

[0134] In this embodiment of the invention, before the recipe acquisition and cooking module 301, the device further includes:

[0135] The start-up inspection module is used to output start-up query information when the inner ring proportional valve or the outer ring proportional valve is detected to be open.

[0136] The fire shut-off module is used to determine that the stove has been mistakenly started if no start confirmation information is received from the user in response to the start inquiry within a preset detection time, and to shut down the inner ring proportional valve and the outer ring proportional valve.

[0137] As the device embodiment is basically similar to the method embodiment, the description is relatively simple, and relevant parts can be found in the description of the method embodiment.

[0138] This invention also provides a stove, comprising:

[0139] One or more processors; and

[0140] One or more machine-readable media storing instructions thereon, which, when executed by the one or more processors, cause the cooktop to perform the flaming method of the cooktop as described in any of the preceding claims.

[0141] This invention also provides a computer-readable storage medium storing instructions that, when executed by one or more processors, cause the processors to perform the ignition control method for a stove as described in any of the preceding claims.

[0142] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0143] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products embodied on one or more machine-readable media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0144] Embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0145] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0146] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0147] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0148] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0149] The above provides a detailed description of a fire control method and a fire control device for a stove provided by the present invention. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for controlling the flame of a stove, characterized in that, The cooktop includes a temperature sensor, an inner ring burner, and an inner ring proportional valve. The temperature sensor is located at the center of the inner ring burner and contacts the bottom of the cooktop. The method includes: Obtain the recipe and cook according to the recipe; The temperature sensor detects the temperature value at the bottom of the pot during cooking, and a temperature change curve is determined based on the temperature value. When the temperature change curve reaches the first temperature inflection point, the inner ring proportional valve is controlled to close, so that the inner ring distributor stops outputting firepower; the first temperature inflection point is the point where the temperature change curve changes from a convex curve to a concave curve; When the temperature change curve reaches a second temperature inflection point, the inner ring proportional valve is opened, and the output firepower of the inner ring distributor is adjusted; the second temperature inflection point is the inflection point where the temperature change curve changes from a concave curve to a convex curve.

2. The method according to claim 1, characterized in that, The stove also includes an outer ring burner and an outer ring proportional valve, and the method further includes: Determine the cooking time during the cooking process; Based on the cooking time, the output power of the outer ring burner is adjusted via the outer ring proportional valve.

3. The method according to claim 2, characterized in that, The recipe includes ingredient information and a correspondence between the ingredient information and preset cooking time. Cooking according to the recipe includes: When the cooking time reaches the preset cooking time, based on the correspondence between the ingredient information and the preset cooking time, the required ingredient information for the preset cooking time is output, and intelligent ingredient delivery or manual delivery reminder is given.

4. The method according to claim 1, characterized in that, The temperature sensor includes a temperature probe, a first resistor, and a second resistor. The temperature probe is connected to either the first or second resistor and is in contact with the bottom of the cookware. Detecting the temperature of the bottom of the cookware during cooking using the temperature sensor includes: When the temperature value is less than a preset temperature threshold, the temperature probe is connected to the first resistor, and the temperature value of the bottom of the pot is determined based on the first resistor. When the temperature value is greater than the preset temperature threshold, the temperature probe is connected to the second resistor, and the temperature value of the bottom of the pot is determined based on the second resistor.

5. The method according to claim 2, characterized in that, The method further includes: Obtain the dry burning threshold; When the temperature reaches the dry burning threshold, the inner ring proportional valve and the outer ring proportional valve are closed to stop the inner ring burner and the outer ring burner from outputting firepower and to output an alarm message.

6. The method according to claim 3, characterized in that, The method further includes: If the difference between the cooking time and the preset cooking time is greater than a preset time threshold, and if the first temperature inflection point is not detected, it is determined that the ingredients corresponding to the ingredient information have not been added. When the ingredients corresponding to the ingredient information are not added, an alarm message is output, and the output power of the inner ring distributor is reduced through the inner ring proportional valve, and / or the output power of the outer ring distributor is reduced through the outer ring proportional valve.

7. The method according to claim 2, characterized in that, Prior to obtaining the recipe, the method further includes: When the opening of the inner ring proportional valve or the outer ring proportional valve is detected, a start query message is output; If no confirmation message is received from the user regarding the start-up inquiry within the preset detection time, it is determined that the stove has been mistakenly started, and the inner ring proportional valve and the outer ring proportional valve are closed.

8. A flame control device for a stove, characterized in that, The cooktop includes a temperature sensor, an inner ring burner, and an inner ring proportional valve. The temperature sensor is located at the center of the inner ring burner and contacts the bottom of the cooktop. The device includes: The recipe acquisition and cooking module is used to acquire recipes and cook according to the recipes. The temperature curve determination module is used to detect the temperature value of the bottom of the pot during cooking through the temperature sensor, and determine the temperature change curve based on the temperature value; The inner ring firepower shutdown module is used to control the inner ring proportional valve to close when the temperature change curve reaches the first temperature inflection point, so that the inner ring fire distributor stops outputting firepower; the first temperature inflection point is the inflection point where the temperature change curve changes from a convex curve to a concave curve; The inner ring firepower activation module is used to control the inner ring proportional valve to open and adjust the output firepower level of the inner ring fire distributor when the temperature change curve reaches the second temperature inflection point; the second temperature inflection point is the inflection point where the temperature change curve changes from a concave curve to a convex curve.

9. A stove, characterized in that, include: One or more processors; and One or more machine-readable media storing instructions thereon, which, when executed by the one or more processors, cause the cooktop to perform a flame control method for a cooktop as described in any one of claims 1-7.

10. One or more machine-readable media having instructions stored thereon that, when executed by one or more processors, cause the processors to perform a flame control method for a stove as described in any one of claims 1-7.

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