A stove control method and device, a stove and a storage medium

Abstract

This invention discloses a stove control method, device, stove, and storage medium. The stove control method includes: starting the stove, controlling the burner to ignite and ignite, acquiring the current impedance change of the electromagnetic induction coil, and determining whether a cooking appliance is placed on the stove based on the current impedance change; after determining that a cooking appliance is placed on the stove, controlling the burner to complete ignition and stabilize combustion, acquiring the real-time thermoelectric potential generated by the thermocouple, and detecting the presence of a flame in the burner through a flame detection sensor; controlling the flame state of the stove based on the real-time thermoelectric potential and the result of the flame detection sensor. This invention effectively improves anti-interference capability, avoids accidental valve closure, adapts to dynamic cooking scenarios such as tossing the food and temporarily leaving the stove, while reducing safety hazards caused by probe aging and signal drift, and responds faster to dangerous conditions such as dry burning and backfire, with more timely and reliable valve closure.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliances technology, and in particular to a stove control method, device, stove and storage medium. Background Technology

[0002] Gas stoves are commonly used cooking appliances in homes and restaurants, and the stability of their combustion state directly affects their safety, energy efficiency, and cooking results. Currently, the combustion state detection of existing stoves mainly relies on traditional detection components such as thermocouples and ionization sensors. The core of both of these methods is to collect the electrical signal generated by the flame as the sole basis for determining the presence of a flame, and then control the solenoid valve to open or close, thereby turning on and off the gas supply.

[0003] In actual cooking, if the flame is suddenly obstructed by a draft, splashes of soup, or accumulated oil and carbon deposits, the electrical signal of the flame will momentarily attenuate, making it impossible to effectively distinguish between "temporary signal interference" and "true flame extinguishing." This often leads to a misjudgment of the flame being extinguished and the gas valve being immediately shut off, interrupting the normal cooking process. Secondly, with increased usage time, the detection probe will experience aging and signal drift, causing delays in recognizing the true flame extinguishing state. In severe cases, detection may fail, resulting in continuous gas leakage and potentially leading to gas explosions, carbon monoxide poisoning, and other accidents that endanger personal safety and property. Furthermore, when users perform actions such as tossing the wok or temporarily leaving the stove to wash the pot while cooking, the flame itself is in a normal combustion state, but the electrical signal collected by the probe is prone to momentary fluctuations. The system may mistakenly interpret this as flameout, forcing the user to restart the flame, which seriously affects the ease of use. Conversely, for truly dangerous conditions such as dry burning or backfire, the response speed of thermocouples and ion probes is inherently lagging, making it impossible to capture abnormal signals in time. This results in a delay in the closing action of the solenoid valve, which cannot block the danger in time and makes it difficult to effectively prevent safety accidents. Summary of the Invention

[0004] This invention provides a stove control method, device, stove, and storage medium to solve the problems of current stoves that rely solely on flame electrical signals as the only criterion, resulting in weak anti-interference and easy misjudgment, safety hazards due to probe aging, inability to adapt to dynamic scenarios, and delayed response to dangerous working conditions.

[0005] According to one aspect of the present invention, a stove control method is provided. The stove includes a burner head, a drip tray, a burner, an electromagnetic induction coil, a thermocouple, and a flame detection sensor. The burner is installed at the burner head position where the drip tray is exposed. The electromagnetic induction coil is embedded in the top of the burner head. The thermocouple is installed in a hole in the burner head. The drip tray is located above the burner head. The flame detection sensor is installed at the upper end of the drip tray. The stove control method includes: After the stove is turned on and the burner is ignited, the current impedance change of the electromagnetic induction coil is obtained, and the cooking utensils are determined based on the current impedance change. After determining that there are cooking utensils on the stove, the burner is controlled to ignite and burn stably, and the real-time thermoelectric potential generated by the thermocouple is obtained, and the presence of a flame in the burner is detected by the flame detection sensor. The flame state of the stove is controlled based on real-time thermoelectric potential and the result of detecting the presence of a flame in the burner through a flame detection sensor.

[0006] Optionally, after starting the cooktop, the following may also be included: Obtain the initial impedance change of the electromagnetic induction coil; If the initial impedance change is greater than or equal to the no-load impedance change, then it is determined that burner ignition is permissible. If the initial impedance change is less than the no-load impedance change, then burner ignition is not permitted.

[0007] Optionally, determining whether a cooking appliance is placed on the stove based on the current impedance change includes: If the current impedance change is within the set change range, it is determined that there are cooking utensils on the stove. If the current impedance change is not within the set change range, it is determined that no cooking utensils are placed on the stove.

[0008] Optionally, after controlling the burner to complete ignition and stabilize combustion, the following steps are also included: If no cooking utensils are detected on the stove, obtain the length of time the cooking utensils have been unplaced; If the time without placement is less than the first time length, the burner will be kept in high flame mode. If the unplaced time is greater than or equal to the first time length and less than the second time length, then the burner is controlled to switch from high flame to low flame. If the time without placement is greater than or equal to the second time length, the burner will be shut off.

[0009] Optionally, the flame state of the stove can be controlled based on real-time thermoelectric potential and the result of detecting the presence of a flame in the burner via a flame detection sensor, including: If the real-time thermoelectric potential is greater than or equal to the thermoelectric potential threshold, the flame state of the stove will be maintained. If the real-time thermoelectric potential is less than the thermoelectric potential threshold, the flame status of the stove will continue to be controlled by detecting whether there is a flame in the burner through the flame detection sensor.

[0010] Optionally, the flame status of the stove can be controlled by continuing to detect the presence of a flame in the burner using a flame detection sensor, including: If the flame detection sensor detects the presence of a flame in the burner, the flame status of the stove will be maintained. If the flame detection sensor detects that there is no flame in the burner, the flame status of the control stove will disappear.

[0011] Optionally, the stove control method also includes: If the real-time thermoelectric potential deviates from the first preset envelope range, and the detection pulse signal of the flame detection sensor for detecting whether there is a flame in the burner does not deviate from the second preset envelope range, then a thermocouple aging fault is reported. If the real-time thermoelectric potential does not deviate from the first preset envelope range, and the detection pulse signal deviates from the second preset envelope range, then a quartz window contamination fault of the flame detection sensor is reported. If the real-time thermoelectric potential deviates from the first preset envelope range and the detection pulse signal deviates from the second preset envelope range, a stove malfunction will be reported.

[0012] According to another aspect of the present invention, a cooktop control device is provided. The cooktop includes a burner, a drip tray, a burner, an electromagnetic induction coil, a thermocouple, and a flame detection sensor. The burner is installed at the burner position where the drip tray protrudes from the burner. The electromagnetic induction coil is embedded in the top of the burner. The thermocouple is installed in a hole in the burner. The drip tray is located above the burner. The flame detection sensor is installed at the upper end of the drip tray. The cooktop control device includes: The module for determining whether cooking appliances are placed is used to start the stove, control the burner to ignite and burn, obtain the current impedance change of the electromagnetic induction coil, and determine whether cooking appliances are placed on the stove based on the current impedance change. The stove judgment information acquisition module is used to control the burner to complete ignition and stable combustion after determining that a cooking appliance is placed on the stove, and to acquire the real-time thermoelectric potential generated by the thermocouple and detect whether there is a flame in the burner through the flame detection sensor. The cooktop control module is used to control the flame state of the cooktop based on real-time thermoelectric potential and the result of detecting the presence of a flame in the burner through a flame detection sensor.

[0013] According to another aspect of the present invention, a stove is provided, which includes a burner, a drip tray, a burner, an electromagnetic induction coil, a thermocouple and a flame detection sensor. The burner is installed at the burner position where the drip tray is exposed. The electromagnetic induction coil is buried in the top of the burner. The thermocouple is installed in the burner hole. The drip tray is above the burner. The flame detection sensor is installed at the upper end of the drip tray. The stove also includes: At least one processor; and, A memory that is communicatively connected to at least one processor; wherein, The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to perform the stove control method of any embodiment of the present invention.

[0014] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions for causing a processor to execute and implement the stove control method of any embodiment of the present invention.

[0015] The technical solution of this invention includes a stove comprising a burner head, a drip tray, a burner, an electromagnetic induction coil, a thermocouple, and a flame detection sensor. The burner is installed at the position of the burner head where the drip tray is exposed. The electromagnetic induction coil is embedded in the top of the burner head. The thermocouple is installed in a hole in the burner head. The drip tray is located above the burner head, and the flame detection sensor is installed on the upper part of the drip tray. The stove control method includes: starting the stove, controlling the burner to ignite and ignite, acquiring the current impedance change of the electromagnetic induction coil, and determining whether a cooking appliance is placed on the stove based on the current impedance change. That is, a comprehensive judgment is made using the impedance change of the electromagnetic induction coil combined with the flame signal. It effectively solves the problem of misjudgment caused by relying solely on a single flame electrical signal, significantly improving anti-interference capabilities and preventing accidental valve shut-off due to broth, airflow, or carbon buildup. Furthermore, after determining that a cooking appliance is placed on the stove, it controls the burner to complete ignition and stabilize combustion, and acquires the real-time thermoelectric potential generated by the thermocouple and detects the presence of a flame in the burner through a flame detection sensor. Based on the real-time thermoelectric potential and the result of the flame detection sensor, it controls the flame state of the stove, which can adapt to cooking scenarios such as tossing food and temporarily leaving the stove, and responds more quickly to dangerous conditions such as dry burning and backfire, ensuring safety and user experience.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a flowchart of a stove control method provided according to an embodiment of the present invention; Figure 2This is a schematic diagram of the structure of a stove provided according to an embodiment of the present invention; Figure 3 This is a top view of the stove provided according to an embodiment of the present invention; Figure 4 This is a cross-sectional structural schematic diagram of a stove provided according to an embodiment of the present invention; Figure 5 This is a flowchart of a stove control method provided according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of a stove control device according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a stove that implements the stove control method of this invention. In the picture: 100-Stove, 110-Burnhead, 111-Electromagnetic induction coil, 112-High flame solenoid valve, 120-Water tray, 130-Burner, 140-Thermocouple, 141-Electrode needle, 150-Flame detection sensor, 161-Pot rack, 162-Stove panel, 163-Switch knob, 164-Chassis, 165-Ignition device, 166-Dual battery box; 310 - Module for determining whether cooking utensils are placed; 320 - Module for acquiring stove information; 330 - Module for controlling stove. 411. Processor; 412. Read-only memory (ROM); 413. Random access memory (RAM); 414. Bus; 415. Input / output (I / O) interface; 416. Input unit; 417. Output unit; 418. Storage unit; 419. Communication unit. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] Figure 1 This invention provides a flowchart of a stove control method, applicable to situations requiring intelligent flameout protection for household gas stoves. The stove control method can be executed by a stove control device, which can be implemented in hardware and / or software. This stove control device can be configured in various types of gas stoves, such as gas stoves and integrated stoves. See also... Figures 2 to 4 As shown, the stove 100 includes a burner 110, a water tray 120, a burner 130, an electromagnetic induction coil 111, a thermocouple 140, and a flame detection sensor 150. The burner 130 is installed at the position of the burner 110 exposed in the water tray 120. The electromagnetic induction coil 111 is buried in the top of the burner 110. The thermocouple 140 is installed in the hole of the burner 110. The water tray 120 is above the burner 110. The flame detection sensor 150 is installed at the upper end of the water tray 120.

[0022] like Figure 1 As shown, the stove control method includes: S110. After starting the stove and controlling the burner to ignite, obtain the current impedance change of the electromagnetic induction coil and determine whether there are cooking utensils on the stove based on the current impedance change.

[0023] See also Figures 2 to 4 As shown, when the stove 100 is turned on, the user can turn the switch knob 163, the pulse generator 165 is energized, the electrode needle 141 discharges, and an electric spark is generated between the tip of the electrode needle 141 and the burner cap / burner head 110, igniting the gas. The thermocouple 140 is heated and directly drives the high-power solenoid valve 112, generating suction to keep the gas passage open. Furthermore, the electromagnetic induction coil 111 senses whether there are cooking utensils on the pot rack 161.

[0024] Specifically, after the burner is ignited, the current impedance change of the electromagnetic induction coil is collected in real time. In this embodiment, the presence of cooking appliances is detected by the current impedance change. Furthermore, the presence of cooking appliances on the stove is determined based on the current impedance change. Specifically, if the current impedance change is within a set range, it is determined that cooking appliances are placed on the stove; if the current impedance change is not within the set range, it is determined that no cooking appliances are placed on the stove.

[0025] The range of changes can be selected based on factors such as the material of the cooking utensil. This range is used to determine whether a cooking utensil is on the pot rack. The range consists of two threshold values ​​reflecting the change in impedance corresponding to whether a cooking utensil is on the pot rack. This embodiment does not impose any specific limitations on the specific values ​​of the range. For example, the minimum threshold can be obtained by adding 30% to the zero-crossing point of an iron pot lid, and the maximum threshold can be obtained by adding 200% to a stainless steel pot. This adapts to different cooking utensil types and ensures the accuracy of the determination of whether a cooking utensil is present.

[0026] Based on the above embodiments, after the stove is started, the electromagnetic induction coil embedded in the top of the burner can be used to determine whether the burner can be controlled to ignite. Specifically, the initial impedance change of the electromagnetic induction coil is obtained. The initial impedance change is collected in real time after the stove is started. If the initial impedance change is greater than or equal to the no-load impedance change, it means that there is a cooking appliance on the pot rack, and the burner ignition is allowed. If the initial impedance change is less than the no-load impedance change, it means that there is no cooking appliance on the pot rack, and the burner ignition is not allowed.

[0027] Since there are objects such as a water tray, burner, and pot rack above the electromagnetic induction coil when no cooking utensils are placed on the pot rack, in this embodiment, the no-load impedance change is set as the impedance change when no cooking utensils are placed on the pot rack by default. The no-load impedance change is used as the zero point for determining whether there are cooking utensils on the current pot rack. Therefore, if the initial impedance change is greater than or equal to the no-load impedance change, it means that there are cooking utensils on the current pot rack.

[0028] S120. After determining that there are cooking utensils on the stove, control the burner to complete ignition and stabilize combustion, and obtain the real-time thermoelectric potential generated by the thermocouple and detect whether there is a flame in the burner through the flame detection sensor.

[0029] Based on the above, after determining that there is a cooking appliance on the stove, the burner is controlled to ignite and burn stably. At this time, the current impedance change of the electromagnetic induction coil can be collected to know in real time whether there is a cooking appliance on the pot rack. If it is detected that there is no cooking appliance on the stove, the length of time that the cooking appliance has not been placed is obtained. The length of time that the cooking appliance has not been placed is the statistical length of time that there is no cooking appliance on the pot rack. The length of time that the cooking appliance has not been placed can be obtained by existing timing methods. This embodiment does not impose any special restrictions on it.

[0030] Furthermore, if the time without placement is less than the first time length, indicating that the cooking appliance has only been briefly removed from the pot rack, the burner is kept at high flame. If the time without placement is greater than or equal to the first time length, but less than the second time length, indicating that the cooking appliance has been removed from the pot rack, the burner flame can be adjusted to continue waiting, i.e., the burner is switched from high flame to low flame to precisely reduce the heat. If the time without placement is greater than or equal to the second time length, indicating that the cooking appliance has been removed from the pot rack for too long, the burner is turned off to prevent dry burning.

[0031] The first time length is the time length during which the cooking utensil is removed from the pot rack as a brief action. The second time length is the time length during which the cooking utensil is removed from the pot rack to meet the conditions for turning off the heat. Both the first and second time lengths can be selected and set according to the actual requirements of the heat-off protection response. This embodiment does not impose any special restrictions on the specific values ​​of the first and second time lengths.

[0032] In this embodiment, the real-time thermoelectric potential generated by the thermocouple is obtained. The real-time thermoelectric potential is used to detect the flame temperature of the burner to determine whether there are cooking utensils on the pot rack. At the same time, the presence of a flame in the burner is detected by a flame detection sensor. Together, they determine the flame status of the stove so that the flame can be extinguished in time to ensure safe use.

[0033] S130: Control the flame state of the stove based on the real-time thermoelectric potential and the result of detecting the presence of a flame in the burner through a flame detection sensor.

[0034] Specifically, if the real-time thermoelectric potential is greater than or equal to the thermoelectric potential threshold, the initial test condition of having cooking utensils placed on the stove is met. The flame may be suppressed by the cooking utensils, so the flame state of the stove is maintained. If the real-time thermoelectric potential is less than the thermoelectric potential threshold, the initial test condition of having cooking utensils placed on the stove is not met. The flame may be drifting and dissipating heat quickly, and the real-time thermoelectric potential is too low. In this case, the flame state of the stove is controlled by detecting whether there is a flame in the burner through the flame detection sensor.

[0035] Furthermore, if the flame detection sensor detects the presence of a flame in the burner, i.e., a signal matching the preset flame characteristics is collected, the burner is determined to be in normal combustion state, and the flame state of the stove is maintained; if the flame detection sensor detects the absence of a flame in the burner, i.e., no valid flame signal is collected, or the collected signal is continuously lower than the preset threshold or exceeds the normal envelope range, the burner is determined to be without a flame or the flame is abnormal, and the flame state of the stove is controlled to disappear to ensure the safe operation of the stove.

[0036] Based on the above embodiments, if the real-time thermoelectric potential deviates from the first preset envelope range, and the detection pulse signal of the flame detection sensor detecting whether there is a flame in the burner does not deviate from the second preset envelope range, then a thermocouple aging fault is reported; if the real-time thermoelectric potential does not deviate from the first preset envelope range, but the detection pulse signal deviates from the second preset envelope range, then a flame detection sensor quartz window contamination fault is reported; if the real-time thermoelectric potential deviates from the first preset envelope range, and the detection pulse signal deviates from the second preset envelope range, then a stove fault is reported, in order to reduce after-sales misjudgment.

[0037] The first preset envelope interval is the envelope range for determining thermocouple aging faults. The first preset envelope interval includes the normal upper and lower threshold values ​​of the thermoelectric potential. The second preset envelope interval is the envelope range for determining quartz window contamination faults of the flame detection sensor. The second preset envelope interval includes the normal upper and lower threshold values ​​of the detection pulse signal. The first and second preset envelope intervals can be calibrated in advance through multiple experiments. In this embodiment, no special restrictions are placed on the specific value ranges of the first and second preset envelope intervals.

[0038] The technical solution of this invention includes a stove comprising a burner head, a drip tray, a burner, an electromagnetic induction coil, a thermocouple, and a flame detection sensor. The burner is installed at the burner head position where the drip tray is exposed. The electromagnetic induction coil is embedded in the top of the burner head, and the thermocouple is installed in the burner head hole. The drip tray is located above the burner head, and the flame detection sensor is installed on the upper end of the drip tray. The stove control method includes: starting the stove, controlling the burner to ignite and burn, acquiring the current impedance change of the electromagnetic induction coil, and determining whether a cooking appliance is placed on the stove based on the current impedance change; after determining that a cooking appliance is placed on the stove, controlling the burner to complete ignition and stable combustion, acquiring the real-time thermoelectric potential generated by the thermocouple, and detecting whether a flame exists in the burner through the flame detection sensor; and controlling the flame state of the stove based on the real-time thermoelectric potential and the result of detecting whether a flame exists in the burner through the flame detection sensor. This invention addresses the shortcomings of current cooktops that rely solely on flame electrical signals for judgment, resulting in weak anti-interference capabilities, susceptibility to misjudgments, safety hazards due to probe aging, inability to adapt to dynamic scenarios, and delayed response to dangerous conditions. It effectively improves anti-interference capabilities, avoids accidental valve closure, adapts to dynamic cooking scenarios such as tossing and temporarily leaving the stove, while reducing safety hazards caused by probe aging and signal drift. It also provides faster response to dangerous conditions such as dry burning and backfire, and more timely and reliable valve closure.

[0039] Based on the same inventive concept Figure 2 This is a flowchart illustrating a stove control method according to an embodiment of the present invention. Based on the above embodiments, this embodiment provides an optional implementation. The stove includes a burner head, a drip tray, a burner, an electromagnetic induction coil, a thermocouple, and a flame detection sensor. The burner is installed at the burner head position where the drip tray protrudes. The electromagnetic induction coil is embedded in the top of the burner head. The thermocouple is installed in a hole in the burner head. The drip tray is located above the burner head, and the flame detection sensor is installed on the upper part of the drip tray. Figure 2 As shown, the stove control method includes: S200, start the stove.

[0040] S210. Obtain the initial impedance change of the electromagnetic induction coil.

[0041] S211. Determine whether the initial impedance change is greater than or equal to the no-load impedance change. If yes, proceed to step S212; otherwise, proceed to step S213.

[0042] S212. Determine whether burner ignition is permitted.

[0043] Specifically, if the initial impedance change is greater than or equal to the no-load impedance change, then it is determined that burner ignition is allowed, and step S220 is continued.

[0044] S213. It is determined that burner ignition is not allowed.

[0045] Specifically, if the initial impedance change is less than the no-load impedance change, then burner ignition is not permitted.

[0046] S220: After the burner is ignited and combustion is controlled, the current impedance change of the electromagnetic induction coil is obtained.

[0047] S221. Determine whether the current impedance change is within the set change range. If yes, proceed to step S222; otherwise, proceed to step S223.

[0048] S222. It is determined that there are cooking utensils on the stove.

[0049] Specifically, if the current impedance change is within the set change range, it is determined that there is a cooking appliance on the stove, and step S230 is continued.

[0050] S223. It is determined that no cooking utensils are placed on the stove.

[0051] Specifically, if the current impedance change is not within the set change range, it is determined that no cooking utensils are placed on the stove. Furthermore, the decision to turn off the stove can be made based on the length of time the cooking utensils have been removed. If the time is less than the first time, it indicates that the cooking utensils have only been briefly removed from the pot rack, and the burner is kept at high flame. If the time is greater than or equal to the first time and less than the second time, it indicates that although the cooking utensils have been removed from the pot rack, the burner flame can be adjusted to continue waiting, i.e., the burner is switched from high flame to low flame to precisely reduce the flame. If the time is greater than or equal to the second time, it indicates that the cooking utensils have been removed from the pot rack for too long, and the burner is turned off to avoid dry burning.

[0052] S230 controls the burner to complete ignition and stabilize combustion, and acquires the real-time thermoelectric potential generated by the thermocouple and detects the presence of a flame in the burner through the flame detection sensor.

[0053] In this embodiment, after the burner completes ignition and stabilizes combustion, if no cooking utensils are detected on the stove, the duration of the absence of the cooking utensils is obtained. For example, taking a first duration of 3 seconds and a second duration of 30 seconds: if the absence time is less than 3 seconds, the burner is kept at high flame; if the absence time is greater than or equal to 3 seconds and less than 30 seconds, the burner switches from high flame to low flame, and automatically returns to high flame after the cooking utensils are placed back; if the absence time is greater than or equal to 30 seconds, the burner is turned off to prevent "empty heating," avoid gas waste, and ensure a smooth cooking experience by stirring the food.

[0054] S240. Determine whether the real-time thermoelectric potential is greater than or equal to the thermoelectric potential threshold. If yes, proceed to step S241. If no, proceed to step S250 or step S260.

[0055] S241. Maintain the flame state of the stove.

[0056] Specifically, if the real-time thermoelectric potential is greater than or equal to the thermoelectric potential threshold, the flame state of the stove will be maintained.

[0057] S250. If the flame detection sensor detects the presence of a flame in the burner, the flame state of the stove is maintained.

[0058] Specifically, if the real-time thermoelectric potential is less than the thermoelectric potential threshold, the flame detection sensor will further detect whether there is a flame in the burner. If there is a flame, the flame state of the stove can be maintained.

[0059] S260. If the flame detection sensor detects that there is no flame in the burner, the flame status of the control stove will disappear.

[0060] Specifically, if the real-time thermoelectric potential is less than the thermoelectric potential threshold, the flame detection sensor will further detect whether there is a flame in the burner. If there is no flame, it is determined that the burner has no flame or the flame is abnormal, and the flame status of the stove will be controlled to disappear to ensure the safe operation of the stove.

[0061] In this embodiment, a dual-channel self-diagnosis of cooktop faults can be achieved using thermocouples and a flame detection sensor. Specifically, considering the detection deviation of the thermocouple and flame detection sensor caused by the presence of cooking utensils on the pot rack, if the real-time thermoelectric potential deviates from the first preset envelope range, and the detection pulse signal of the flame detection sensor detecting the presence of a flame in the burner does not deviate from the second preset envelope range, a thermocouple aging fault is reported; if the real-time thermoelectric potential does not deviate from the first preset envelope range, but the detection pulse signal deviates from the second preset envelope range, a flame detection sensor quartz window contamination fault is reported; if the real-time thermoelectric potential deviates from the first preset envelope range, and the detection pulse signal deviates from the second preset envelope range, a cooktop fault is reported.

[0062] The technical solution of this invention uses an electromagnetic induction coil embedded in the top of the burner to achieve non-contact determination of the presence of cooking utensils, unaffected by oil or water, and at low cost. Simultaneously, using the burner, drip tray, and other fixed metal elements as a background, it provides the change in open-circuit impedance as the basis for burner ignition determination, and combines this with a set range of changes to jointly determine whether cooking utensils are placed on the stove. Its false alarm rate can reach less than 0.3%, and it allows for low-heat combustion even without a pot, reducing the safety hazards of dry burning and minimizing energy waste. Furthermore, it uses both thermocouple potential shift and flame detection sensors to determine flameout, ensuring timely flameout and safe use. Finally, it allows the flame to maintain its position even when the pot is removed from the flame, preventing flameout even when tossing food, providing a seamless user experience.

[0063] Based on the same inventive concept Figure 3 This is a schematic diagram of a stove control device provided in an embodiment of the present invention. The stove includes a burner head, a drip tray, a burner, an electromagnetic induction coil, a thermocouple, and a flame detection sensor. The burner is installed at the burner head position where the drip tray protrudes. The electromagnetic induction coil is embedded in the top of the burner head. The thermocouple is installed in a hole in the burner head. The drip tray is located above the burner head, and the flame detection sensor is installed on the upper part of the drip tray. Figure 3 As shown, the stove control device includes: The cooking appliance determination module 310 is used to start the stove, control the burner to ignite and burn, obtain the current impedance change of the electromagnetic induction coil, and determine whether there is a cooking appliance on the stove based on the current impedance change. The stove judgment information acquisition module 320 is used to control the burner to complete ignition and stable combustion after judging that there is a cooking appliance on the stove, and to acquire the real-time thermoelectric potential generated by the thermocouple and detect whether there is a flame in the burner through the flame detection sensor. The cooktop control module 330 is used to control the flame state of the cooktop based on the real-time thermoelectric potential and the result of detecting the presence of a flame in the burner through a flame detection sensor.

[0064] Optionally, after starting the cooktop, the following may also be included: The burner ignition control module is used to acquire the initial impedance change of the electromagnetic induction coil. If the initial impedance change is greater than or equal to the no-load impedance change, then it is determined that burner ignition is permissible. If the initial impedance change is less than the no-load impedance change, then burner ignition is not permitted.

[0065] Optionally, the system can determine whether cooking utensils are placed on the stove based on the current impedance change, specifically for: If the current impedance change is within the set change range, it is determined that there are cooking utensils on the stove. If the current impedance change is not within the set change range, it is determined that no cooking utensils are placed on the stove.

[0066] Optionally, after controlling the burner to complete ignition and stabilize combustion, the following steps are also included: The burner control module is used to perform actions such as obtaining the length of time that the cooking appliance has not been placed on the stove if it is detected that no cooking appliance is placed on the stove. If the time without placement is less than the first time length, the burner will be kept in high flame mode. If the unplaced time is greater than or equal to the first time length and less than the second time length, then the burner is controlled to switch from high flame to low flame. If the time without placement is greater than or equal to the second time length, the burner will be shut off.

[0067] Optionally, the cooktop control module 330 is specifically used for: If the real-time thermoelectric potential is greater than or equal to the thermoelectric potential threshold, the flame state of the stove will be maintained. If the real-time thermoelectric potential is less than the thermoelectric potential threshold, the flame status of the stove will continue to be controlled by detecting whether there is a flame in the burner through the flame detection sensor.

[0068] Optionally, the flame status of the stove can be controlled by detecting the presence of a flame in the burner using a flame detection sensor, specifically for: If the flame detection sensor detects the presence of a flame in the burner, the flame status of the stove will be maintained. If the flame detection sensor detects that there is no flame in the burner, the flame status of the control stove will disappear.

[0069] Optionally, the cooktop control device may also include: The fault judgment module is used to report a thermocouple aging fault if the real-time thermoelectric potential deviates from the first preset envelope range and the detection pulse signal of the flame detection sensor for detecting whether there is a flame in the burner does not deviate from the second preset envelope range. If the real-time thermoelectric potential does not deviate from the first preset envelope range, and the detection pulse signal deviates from the second preset envelope range, then a quartz window contamination fault of the flame detection sensor is reported. If the real-time thermoelectric potential deviates from the first preset envelope range and the detection pulse signal deviates from the second preset envelope range, a stove malfunction will be reported.

[0070] The stove control device provided in the embodiments of the present invention can execute the stove control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the stove control method.

[0071] Based on the same inventive concept, and building upon the above embodiments, see [link to previous document]. Figures 2 to 4 As shown, the stove 100 includes a burner 110, a water tray 120, a burner 130, an electromagnetic induction coil 111, a thermocouple 140, and a flame detection sensor 150. The burner 130 is installed at the position of the burner 110 exposed in the water tray 120. The electromagnetic induction coil 111 is buried in the top of the burner 110. The thermocouple 140 is installed in the hole of the burner 110. The water tray 120 is above the burner 110. The flame detection sensor 150 is installed at the upper end of the water tray 120.

[0072] The burner head 110 is located behind the chassis 164. Each burner head 110 has an electromagnetic induction coil 111 embedded in its top. That is, each burner head 110 in the stove 100 has an electromagnetic induction coil 111 embedded in its top. The electromagnetic induction coil 111 can be formed into a racetrack-shaped FPC soft coil, like a thin sticker, covered with 0.2 mm mica sheet for heat insulation, and then covered with 0.5 mm high-temperature glue. The two outgoing wires of the electromagnetic induction coil 111 are directly soldered to the main control board of the stove and powered by 5V.

[0073] Thermocouple 140 is installed in the burner head 110 hole. The function of the thermocouple is that when the flame burns to the top of the thermocouple, a voltage of 10mV to 30mV is generated due to the Seebeck effect, which directly drives the electromagnetic induction coil 111 to generate attraction and keep the gas passage open. At the same time, electrode needle 141 is also installed in the burner head 110 hole. The function of electrode needle 141 is to release a high voltage pulse of 12kV to 15kV instantaneously, and generate an electric spark between the needle tip and the burner head to ignite the gas. The water receiving tray 120 is located above the burner head 110.

[0074] A burner 130 is installed at the exposed burner head 110 position on the water tray 120. A pot rack 161 is placed above the water tray 120. A flame detection sensor 150 is installed on the upper part of the water tray 120 and tightened by threads. Its housing is made of stainless steel, and the top quartz window faces the root of the copper core flame (the brightest ultraviolet region), while avoiding direct sunlight from the ignition needle spark to reduce interference. The flame detection sensor 150 can be an ultraviolet (UV) sensor. The UV sensor emits ultraviolet light in the range of 180nm to 300nm whenever a flame is burning. When the UV sensor detects the ultraviolet light, it outputs "fire present" and when the ultraviolet light disappears, it immediately outputs "fire extinguished," causing the controller to close the valve and cut off the gas supply.

[0075] The cooktop 100 also includes a cooktop panel 162 and a dual battery box 166. The cooktop panel 162 is located on the upper part of the cooktop 100, forming the operating and support surface of the cooktop 100, used to support cooking appliances and integrate related operating control components. The dual battery box 166 is installed in a concealed position on the lower part or rear side of the cooktop 100, and can simultaneously accommodate two sets of power supply batteries to form a dual-redundant power supply structure. It is used to provide a stable and continuous DC power supply to the control unit, ignition device, flame detection unit and alarm unit of the cooktop 100, ensuring that the cooktop 100 can still work normally when the voltage of a single battery is insufficient, thereby improving power supply reliability and safety of use.

[0076] Figure 7 A schematic diagram of the structure of a stove 100 that can be used to implement an embodiment of the present invention is shown. Figure 7As shown, the cooktop 100 also includes at least one processor 411 and a memory, such as a read-only memory (ROM 412) or a random access memory (RAM 413), communicatively connected to the at least one processor 411. The memory stores computer programs executable by the at least one processor. The processor 411 can perform various appropriate actions and processes based on the computer program stored in the ROM 412 or loaded from storage unit 418 into the RAM 413. The RAM 413 can also store various programs and data required for the operation of the cooktop 100. The processor 411, ROM 412, and RAM 413 are interconnected via a bus 414. An I / O (input / output) interface 415 is also connected to the bus 414.

[0077] Multiple components in the cooktop 100 are connected to the I / O interface 415, including: an input unit 416, such as a keyboard, mouse, etc.; an output unit 417, such as various types of displays, speakers, etc.; a storage unit 418, such as a disk, optical disk, etc.; and a communication unit 419, such as a network card, modem, wireless transceiver, etc. The communication unit 419 allows the cooktop 100 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0078] Processor 411 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 411 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 411 performs the various methods and processes described above, such as stove control methods.

[0079] In some embodiments, the cooktop control method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 418. In some embodiments, part or all of the computer program may be loaded and / or installed on the cooktop 100 via ROM 412 and / or communication unit 419. When the computer program is loaded into RAM 413 and executed by processor 411, one or more steps of the cooktop control method described above may be performed. Alternatively, in other embodiments, processor 411 may be configured to perform the cooktop control method by any other suitable means (e.g., by means of firmware).

[0080] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0081] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0082] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0083] To provide user interaction, the systems and techniques described herein can be implemented on a cooktop having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the cooktop. Other types of devices can also be used to provide user interaction; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0084] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0085] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0086] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0087] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A stove control method, characterized in that, The stove includes a burner head, a drip tray, a burner, an electromagnetic induction coil, a thermocouple, and a flame detection sensor. The burner is installed at the position of the burner head where the drip tray is exposed. The electromagnetic induction coil is embedded in the top of the burner head. The thermocouple is installed in the burner head hole. The drip tray is located above the burner head. The flame detection sensor is installed at the upper end of the drip tray. The stove control method includes: After starting the stove and controlling the burner to ignite, the current impedance change of the electromagnetic induction coil is obtained, and the cooking utensils are determined based on the current impedance change. After determining that the cooking appliance is placed on the stove, the burner is controlled to ignite and burn stably, and the real-time thermoelectric potential generated by the thermocouple is acquired, and the presence of a flame in the burner is detected by the flame detection sensor. The flame state of the stove is controlled based on the real-time thermoelectric potential and the result of the flame detection sensor detecting whether there is a flame in the burner.

2. The stove control method according to claim 1, characterized in that, After the stove is started, the following are also included: Obtain the initial impedance change of the electromagnetic induction coil; If the initial impedance change is greater than or equal to the no-load impedance change, then it is determined that the burner ignition is permitted. If the initial impedance change is less than the no-load impedance change, then it is determined that the burner ignition is not allowed to be controlled.

3. The stove control method according to claim 1, characterized in that, Determining whether a cooking appliance is placed on the stove based on the current impedance change includes: If the current impedance change is within the set change range, it is determined that the cooking appliance is placed on the stove. If the current impedance change is not within the set change range, it is determined that no cooking appliance is placed on the stove.

4. The stove control method according to claim 1, characterized in that, After controlling the burner to complete ignition and stabilize combustion, the method further includes: If it is detected that no cooking appliance is placed on the stove, the length of time the cooking appliance has not been placed is obtained; If the unplaced time is less than the first time, the burner is controlled to maintain a high flame state; If the unplaced time is greater than or equal to the first time and the unplaced time is less than the second time, then the burner is controlled to switch from the high flame state to the low flame state. If the unplaced time is greater than or equal to the second time, then the burner is controlled to shut off.

5. The stove control method according to claim 1, characterized in that, The flame state of the stove is controlled based on the real-time thermoelectric potential and the result of the flame detection sensor detecting the presence of a flame in the burner, including: If the real-time thermoelectric potential is greater than or equal to the thermoelectric potential threshold, the flame state of the stove is maintained; If the real-time thermoelectric potential is less than the thermoelectric potential threshold, the flame state of the stove will continue to be controlled by detecting whether there is a flame in the burner through the flame detection sensor.

6. The stove control method according to claim 5, characterized in that, The flame state of the stove is controlled by continuing to detect the presence of a flame in the burner using the flame detection sensor, including: If the flame detection sensor detects that there is a flame in the burner, the flame state of the stove is maintained; If the flame detection sensor detects that there is no flame in the burner, the flame state of the stove is controlled to disappear.

7. The stove control method according to claim 1, characterized in that, The stove control method also includes: If the real-time thermoelectric potential deviates from the first preset envelope range, and the detection pulse signal of the flame detection sensor for detecting whether there is a flame in the burner does not deviate from the second preset envelope range, then the thermocouple aging fault is reported. If the real-time thermoelectric potential does not deviate from the first preset envelope range, and the detection pulse signal deviates from the second preset envelope range, then a quartz window contamination fault of the flame detection sensor is reported. If the real-time thermoelectric potential deviates from the first preset envelope range and the detection pulse signal deviates from the second preset envelope range, then the stove malfunction is reported.

8. A stove control device, characterized in that, The stove includes a burner head, a drip tray, a burner, an electromagnetic induction coil, a thermocouple, and a flame detection sensor. The burner is installed at the position of the burner head where the drip tray is exposed. The electromagnetic induction coil is embedded in the top of the burner head. The thermocouple is installed in the burner head hole. The drip tray is located above the burner head. The flame detection sensor is installed on the upper end of the drip tray. The stove control device includes: A cooking appliance determination module is used to start the stove, control the burner to ignite and burn, obtain the current impedance change of the electromagnetic induction coil, and determine whether a cooking appliance is placed on the stove based on the current impedance change. The stove determination information acquisition module is used to control the burner to complete ignition and stable combustion after determining that the cooking appliance is placed on the stove, and to acquire the real-time thermoelectric potential generated by the thermocouple and detect whether there is a flame in the burner through the flame detection sensor. The cooktop control module is used to control the flame state of the cooktop based on the real-time thermoelectric potential and the result of detecting the presence of a flame in the burner through the flame detection sensor.

9. A stove, characterized in that, The stove includes a burner head, a water tray, a burner, an electromagnetic induction coil, a thermocouple, and a flame detection sensor. The burner is installed at the position of the burner head where the water tray is exposed. The electromagnetic induction coil is buried in the top of the burner head. The thermocouple is installed in the burner head hole. The water tray is above the burner head. The flame detection sensor is installed at the upper end of the water tray. The stove also includes: At least one processor; and, A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the stove control method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the stove control method according to any one of claims 1-7.

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