Control method and device of range hood, range hood and storage medium

Abstract

The application provides a control method and device of an extractor hood, the extractor hood and a storage medium. The method is applied to the field of household appliances, and the extractor hood comprises a power supply, a first temperature detection device, a second temperature detection device, a touch panel and a smoke inlet. The first temperature detection device collects a cooking temperature of a smoke inlet area of the extractor hood, and the second temperature detection device collects a panel temperature of the touch panel. The method comprises the following steps: when the extractor hood is in a working state, the cooking temperature collected by the first temperature detection device is acquired, and the panel temperature collected by the second temperature detection device is acquired; the fire source monitoring state of the smoke inlet is determined based on the cooking temperature and the panel temperature; and when the fire source monitoring state is an ignition state, the power supply of the extractor hood is cut off. The method can cut off the power supply of the extractor hood in time, and improves the safety of using the extractor hood.

Description

Technical Field

[0001] The present application relates to the field of household appliances, and more specifically, to a control method and device for a range hood in the field of household appliances, a range hood, and a storage medium. Background Art

[0002] Range hoods are an essential kitchen appliance in modern homes, typically installed above the kitchen stove. They quickly extract stovetop waste and harmful cooking fumes, exhausting them outdoors. When the range hood is in use, a large amount of oily dirt accumulates in the smoke inlet, which absorbs kitchen fumes. This oily dirt is highly flammable and can ignite in high-temperature environments (for example, when the stove is overheated during stir-frying). If the range hood is still in operation, its suction and exhaust function provides a large amount of oxygen to the smoke inlet, increasing the intensity of the fire and potentially causing it to spread, compromising the safety of the range hood. Summary of the Invention

[0003] The present application provides a range hood control method, device, range hood, and storage medium. The method can promptly cut off the power supply of the range hood, thereby improving the safety of using the range hood.

[0004] In a first aspect, a control method for a range hood is provided, wherein the range hood includes a power supply, a first temperature detection device, a second temperature detection device, a touch panel, and a smoke inlet, wherein the first temperature detection device collects a cooking temperature of a smoke inlet area of ​​the range hood, and the second temperature detection device collects a panel temperature of the touch panel. The method includes: when the range hood is in a working state, obtaining the cooking temperature of the smoke inlet area collected by the first temperature detection device and obtaining the panel temperature of the touch panel collected by the second temperature detection device; determining a fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature; and cutting off the power supply of the range hood when the fire source monitoring state is an ignition state.

[0005] In a second aspect, a device for controlling a range hood is provided, which is applied to the range hood. The range hood includes a power supply, a first temperature detection device, a second temperature detection device, a touch panel and a smoke inlet. The first temperature detection device collects the cooking temperature of the smoke inlet area of ​​the range hood, and the second temperature detection device collects the panel temperature of the touch panel. The device includes: an acquisition unit, which is used to obtain the cooking temperature of the smoke inlet area collected by the first temperature detection device and the panel temperature of the touch panel collected by the second temperature detection device when the range hood is in working state; a determination unit, which is used to determine the fire source monitoring status of the smoke inlet based on the cooking temperature and the panel temperature; and a cut-off unit, which is used to cut off the power supply of the range hood when the fire source monitoring status is the ignition state.

[0006] In a third aspect, a range hood is provided, comprising: a memory for storing executable program code;

[0007] The processor is used to call and run the executable program code from the memory, so that the range hood executes the method in the above-mentioned first aspect or any possible implementation of the first aspect.

[0008] In a fourth aspect, a computer program product is provided, comprising: a computer program code, which, when executed on a computer, enables the computer to execute the method in the first aspect or any possible implementation of the first aspect.

[0009] In a fifth aspect, a computer-readable storage medium is provided, which stores a computer program code. When the computer program code runs on a computer, the computer executes the method in the above-mentioned first aspect or any possible implementation of the first aspect.

[0010] In an embodiment of the present application, the cooking temperature of the smoke inlet area of ​​the range hood is collected by the first temperature detection device and the panel temperature of the touch panel is collected by the second temperature detection device. When it is determined that the fire source monitoring status of the smoke inlet of the range hood is in the ignition state, the power supply of the range hood is cut off. The fire source monitoring status of the smoke inlet can be accurately judged by the cooking temperature and the panel temperature, and when the fire source monitoring status of the smoke inlet is in the ignition state, the power supply of the range hood can be cut off in time to avoid further spread of the fire, thereby improving the safety of using the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of a scenario of a range hood control method provided by an embodiment of the present application;

[0012] Figure 2 This is a flow chart of a range hood control method provided in an embodiment of the present application;

[0013] Figure 3 This is a structural diagram of a range hood provided in an embodiment of the present application;

[0014] Figure 4 This is a flow chart of a range hood control method provided in an embodiment of the present application;

[0015] Figure 5 This is a flow chart of a range hood control method provided in an embodiment of the present application;

[0016] Figure 6 This is a flow chart of a range hood control method provided in an embodiment of the present application;

[0017] Figure 7 This is a schematic structural diagram of a range hood control device provided in an embodiment of the present application;

[0018] Figure 8 This is a structural diagram of a range hood provided in an embodiment of the present application. DETAILED DESCRIPTION

[0019] The following will clearly and thoroughly describe the technical solutions in this application in conjunction with the accompanying drawings. In the description of the embodiments of this application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more than two.

[0020] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0021] Range hoods are essential appliances in modern kitchens. Through efficient suction, they quickly expel fumes, steam, odors, and harmful substances generated during cooking, maintaining fresh air. However, with long-term use, a large amount of oil and dirt easily accumulates inside the range hood, particularly around the smoke inlet and filter. This oil and dirt not only affects the efficiency of the range hood but is also highly flammable. During high-temperature cooking, such as stir-frying, if the oil or food temperature is too high, it can cause the cooking utensils to catch fire. As the range hood extracts the fumes generated during cooking, it draws in sparks from the cooking utensils, causing flames to form in the smoke inlet. This ignites the accumulated oil and dirt, which then spreads rapidly throughout the range hood through the exhaust system, damaging its internal components and even threatening the safety of the entire kitchen. The risk of fire is particularly increased when flammable items such as paper towels and oil drums are located near the range hood.

[0022] Based on this, please refer to Figure 1 , Figure 1 This is a scene diagram of a range hood control method provided by an embodiment of the present application. It can be understood that Figure 1The range hood provided in the embodiment is a side-suction range hood, while the range hoods in the embodiments of the present application also include top-suction range hoods, wall-mounted range hoods, etc., and the specific type of range hood is not limited here. The control method of the range hood proposed in the present application is that when the user starts the range hood 500 to absorb the oil smoke generated during cooking, the power supply provides electrical energy to drive the motor, lighting and other components of the range hood to operate, and at the same time opens the shielding panel 02 of the range hood, wherein the position of the shielding panel 02 corresponds to the position of the smoke inlet of the range hood. When the range hood 500 is not working, the shielding panel 02 blocks the smoke inlet, which not only improves the overall aesthetics of the range hood, but also prevents dust from entering the range hood housing through the open smoke inlet, or prevents the oil smoke in the flue from backflowing and causing the smoke to be discharged into the room from the smoke inlet; when the range hood needs to absorb oil smoke, the shielding panel 02 is opened, so that the smoke inlet is exposed to the outside, thereby ensuring that the oil smoke generated during cooking can be promptly extracted by the range hood 500. After opening the shielding panel, fan and other components, the range hood 500 enters the working state, and the cooking temperature of the smoke inlet area of ​​the range hood is collected by the first temperature detection device, and the panel temperature of the touch panel 01 is collected by the second temperature detection device. The fire source monitoring state of the smoke inlet is determined based on the cooking temperature and the panel temperature. When the fire source monitoring state is the ignition state, the power supply of the range hood is cut off, where the fire source monitoring state is the state of detecting whether there is an open flame at the smoke inlet.

[0023] In an embodiment of the present application, the cooking temperature of the smoke inlet area of ​​the range hood is collected by the first temperature detection device and the panel temperature of the touch panel is collected by the second temperature detection device. When it is determined that the fire source monitoring status of the smoke inlet of the range hood is in the ignition state, the power supply of the range hood is cut off. The fire source monitoring status of the smoke inlet can be accurately judged by the cooking temperature and the panel temperature, and when the fire source monitoring status of the smoke inlet is in the ignition state, the power supply of the range hood can be cut off in time to avoid further spread of the fire, thereby improving the safety of using the range hood.

[0024] based on Figure 1 The following is a schematic diagram of the scene Figure 2-Figure 6 , the control method of the range hood provided in the embodiment of the present application is introduced in detail.

[0025] See Figure 2 , is a flow chart of a range hood control method provided in an embodiment of the present application. Figure 2 As shown, the method of the embodiment of the present application may include the following steps S101 to S103.

[0026] S101, when the range hood is in operation, obtaining a cooking temperature of a smoke inlet area collected by a first temperature detection device and a panel temperature of a touch panel collected by a second temperature detection device;

[0027] The first temperature detection device collects the cooking temperature of the smoke intake area during cooking. The smoke intake area is the area vertically formed between the installation location of the first temperature detection device and the cooking utensils. Optionally, in this embodiment of the present application, the first temperature detection device can be installed in the top area of ​​the range hood; the first temperature detection device can be any of an infrared temperature sensor, a thermocouple sensor, and a thermistor sensor.

[0028] It is understood that when a cooking appliance is heated, the temperature of the fumes and steam it produces will affect the cooking temperature in the smoke intake area. Heat generated by the cooking appliance will also be transferred to the air, raising the cooking temperature in the smoke intake area. Therefore, in the embodiments of this application, the cooking temperature in the smoke intake area collected includes not only the temperature of the fumes and steam generated during cooking, but also the temperature generated by the heating of the cooking appliance.

[0029] Furthermore, in order to improve the accuracy of the cooking temperature collected in the smoke inlet area, the first temperature detection device can also be installed in the lower area of ​​the range hood, which is closer to the cooking utensils than the top area of ​​the range hood. It can avoid heat loss during conduction and improve the accuracy of subsequent fire source monitoring status of the smoke inlet based on the cooking temperature.

[0030] The second temperature sensor collects the panel temperature of the touch panel. The touch panel can be an interface for users to interact with the range hood, and is used to control various working modes of the range hood, such as starting or shutting down the range hood, adjusting the suction power of the range hood, adjusting the wind speed, controlling the lights, timing functions, cleaning reminders, etc. It is usually installed in front of or on top of the range hood, close to the smoke inlet of the range hood, for easy operation and touch by users. In addition, the touch panel also has a display function. In addition to displaying the current working parameters of the range hood, it can also display detection data such as the smoke concentration in the current kitchen environment. The second temperature sensor can be installed on the back or inside of the touch panel to obtain the panel temperature of the touch panel in real time and judge the temperature change of the touch panel. Specifically, the second temperature detection device can be a chip thermistor or a thermocouple type sensor, and the specific type of the second temperature detection device is not limited here.

[0031] S102, determining a fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature;

[0032] In one embodiment, after the cooking temperature and the panel temperature are obtained, the fire source monitoring state of the smoke inlet of the range hood is determined based on the cooking temperature and the panel temperature. The fire source monitoring state is a state for detecting whether there is an open flame at the smoke inlet.

[0033] It can be understood that if the fire source monitoring status of the smoke inlet of the range hood is the ignition state, it means that when the range hood is in working state, the open flame and oil smoke generated during the heating of the cooking utensils are sucked into the smoke inlet of the range hood, causing the oil accumulated in the smoke inlet to be ignited, and there is an open flame in the smoke inlet. It is judged that the fire source monitoring status of the smoke inlet is the ignition state. Since the installation position of the touch panel is close to the smoke inlet, and the touch panel is generally made of glass, metal, plastic or other materials, and has a certain heat conduction effect, when there is an open flame in the smoke inlet, the panel temperature of the touch panel obtained by the second temperature detection device is usually higher; and when the cooking utensil generates an open flame, due to the high temperature of the open flame, the temperature conducted by the smoke inlet area of ​​the range hood will also increase. Therefore, the cooking temperature of the smoke inlet area obtained by the first temperature detection device can be used to determine whether the cooking utensil has an open flame, and then the fire source monitoring status of the smoke inlet is determined by the cooking temperature and the panel temperature. This can improve the accuracy of determining the fire source monitoring status and avoid errors caused by judgment based on single temperature data.

[0034] Optionally, in an embodiment of the present application, when it is determined that the cooking temperature is greater than or equal to a first temperature threshold and the panel temperature is greater than or equal to a second temperature threshold, the fire source monitoring status of the smoke inlet is determined to be a ignited state; when it is determined that the cooking temperature is less than the first temperature threshold and / or the panel temperature is less than the second temperature threshold, the fire source monitoring status of the smoke inlet is determined to be an unignited state, wherein the ignited state is a state when an open flame is generated at the smoke inlet; and the unignited state is a state when no open flame is generated at the smoke inlet.

[0035] S103, when the fire source monitoring state is the ignition state, cutting off the power supply of the range hood.

[0036] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a range hood. The range hood includes a first temperature detection device, a second temperature detection device, a touch panel, a power supply, a main motor assembly, and a processor. After obtaining the cooking temperature of the smoke inlet area as measured by the first temperature detection device and the panel temperature of the touch panel as measured by the second temperature detection device, the processor determines that the fire source monitoring status of the smoke inlet is ignited based on the cooking temperature and the panel temperature. The processor then sends a power-off signal to the power board to shut off the range hood's power supply. The power board then stops supplying power to the main motor assembly, shutting off the power supply to the range hood and causing the range hood to cease operation. The main motor assembly is the core driving component of the range hood, providing the driving force to rotate the range hood's fan, thereby generating suction to absorb fumes, odors, and other gases in the kitchen.

[0037] It should be noted that after the power supply of the range hood is cut off, the range hood fan stops working and no longer generates suction, that is, it will no longer continue to inhale the fumes generated during the cooking process. This can avoid the open flame generated by the cooking utensils from continuing to be inhaled into the smoke inlet when the fire source monitoring status of the smoke inlet is ignited, thereby aggravating the fire at the smoke inlet; and it can also avoid inhaling a large amount of oxygen to provide a combustion aid for the fire source at the smoke inlet.

[0038] In an embodiment of the present application, the cooking temperature of the smoke inlet area of ​​the range hood is collected by the first temperature detection device and the panel temperature of the touch panel is collected by the second temperature detection device. When it is determined that the fire source monitoring status of the smoke inlet of the range hood is in the ignition state, the power supply of the range hood is cut off. The fire source monitoring status of the smoke inlet can be accurately judged by the cooking temperature and the panel temperature, and when the fire source monitoring status of the smoke inlet is in the ignition state, the power supply of the range hood is cut off in time to avoid further spread of the fire, thereby improving the safety of using the range hood.

[0039] See Figure 4 , is a flow chart of a range hood control method provided in an embodiment of the present application. Figure 4 As shown, the method of the embodiment of the present application may include the following steps S201-S205.

[0040] S201, when the range hood is in operation, obtaining a cooking temperature of the smoke inlet area collected by a first temperature detection device and a panel temperature of the touch panel collected by a second temperature detection device;

[0041] For details, please refer to the description of step S101 in the above embodiment of the specification, which will not be repeated here.

[0042] S202, determining a first temperature change rate between cooking temperatures collected at adjacent times;

[0043] In one embodiment, there are two cooking temperatures, and a first temperature change rate between the two cooking temperatures with adjacent acquisition times is obtained.

[0044] Optionally, the cooking temperature includes a first temperature and a second temperature, wherein the first temperature is the cooking temperature of the smoke intake area collected 0.1 seconds after the range hood enters the working state, and the second temperature is the cooking temperature of the smoke intake area collected 0.3 seconds after the range hood enters the working state. The first temperature detection device collects the cooking temperature of the smoke intake area with a time period of 0.2 seconds, then the first temperature change rate = (second temperature - first temperature) / T, where T is the time period.

[0045] S203, determining a second temperature change rate between panel temperatures at adjacent acquisition times;

[0046] In one embodiment, there are two panel temperatures, and a second temperature change rate between the two panel temperatures with adjacent acquisition times is obtained.

[0047] Optionally, the panel temperature includes a third temperature and a fourth temperature, where the third temperature is the panel temperature of the touch panel collected 0.1 seconds after the range hood enters the working state, and the fourth temperature is the panel temperature of the touch panel collected 0.3 seconds after the range hood enters the working state. The third temperature detection device collects the panel temperature of the touch panel with a time period of 0.2 seconds, and the second temperature change rate = (fourth temperature - third temperature) / T.

[0048] S204, determining a fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature;

[0049] In one embodiment, after obtaining the cooking temperatures of at least two smoke inlet areas and the panel temperature of the touch panel, the fire source monitoring status of the smoke inlet is determined based on the cooking temperature, the panel temperature, the first temperature change rate obtained from two cooking temperatures adjacent to each other in acquisition time, and the second temperature change rate obtained from two panel temperatures adjacent to each other in acquisition time.

[0050] Furthermore, determining the fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature includes:

[0051] S2041, determining that the fire source monitoring state of the smoke inlet is an ignition state when it is determined that the first temperature change rate is greater than or equal to the first change threshold, the second temperature change rate is greater than or equal to the second change threshold, the cooking temperature is greater than or equal to the first temperature threshold, and the panel temperature is greater than or equal to the second temperature threshold;

[0052] The first temperature change rate is the rate of change of two adjacent cooking temperatures within a time period, and the first temperature change rate can be used to determine the magnitude of the cooking temperature change within the time period; the second temperature change rate is the rate of change of two adjacent panel temperatures within the time period, and the second temperature change rate can be used to determine the magnitude of the panel temperature change within the time period; the first change threshold is used to determine whether the cooking temperature change reaches the threshold for determining the fire source monitoring state to be ignited; the second change threshold is used to determine whether the panel temperature change reaches the threshold for determining the fire source monitoring state to be ignited. In the embodiment of the present application, the first temperature threshold and the second temperature threshold can be determined in advance based on experimental data.

[0053] It is understandable that when the fire source monitoring status of the smoke inlet is in the ignition state, the cooking temperature of the smoke inlet area and the panel temperature of the touch panel will rise sharply. Therefore, when the first temperature change rate is greater than or equal to the first change threshold, the second temperature change rate is greater than or equal to the second change threshold, the cooking temperature is greater than or equal to the first temperature threshold, and the panel temperature is greater than or equal to the second temperature threshold, the fire source monitoring status of the smoke inlet is determined to be in the ignition state. By determining that the fire source monitoring status of the smoke inlet is in the ignition state by the cooking temperature and the panel temperature reaching the temperature threshold, and by combining the change amplitude of the cooking temperature and the panel temperature reaching the change threshold, the fire source monitoring status of the smoke inlet is determined to be in the ignition state, which can improve the accuracy of determining that the fire source monitoring status of the smoke inlet is in the ignition state.

[0054] S2042, when it is determined that the first temperature change rate is less than the first change threshold, and / or the second temperature change rate is less than the second change threshold, and / or the cooking temperature is less than the first temperature threshold, and / or the panel temperature is less than the second temperature threshold, it is determined that the fire source monitoring status of the smoke inlet is an unignited state.

[0055] In one embodiment, when it is determined that any one of the following conditions is met: the first temperature change rate is less than the first change threshold, the second temperature change rate is less than the second change threshold, the cooking temperature is less than the first temperature threshold, and the panel temperature is less than the second temperature threshold, the fire source monitoring status of the smoke inlet is determined to be an unignited state.

[0056] S205: When the fire source monitoring state is the ignition state, the power supply of the range hood is cut off.

[0057] In one embodiment, when the fire source monitoring status is ignited, the power supply to the range hood is cut off. It is understood that after the power supply to the range hood is cut off, the range hood fan stops operating and no longer generates suction, i.e., it no longer continues to draw in fumes generated during cooking. This prevents the open flame generated by the cooking appliance from being drawn into the smoke inlet when the fire source monitoring status at the smoke inlet is ignited, further intensifying the fire at the smoke inlet. Furthermore, this prevents the inhalation of a large amount of oxygen, which could provide combustion aid for the fire source at the smoke inlet.

[0058] In an embodiment of the present application, a first temperature change rate between cooking temperatures adjacent to the acquisition time and a second temperature change rate between panel temperatures adjacent to the acquisition time are determined, and then the fire source monitoring status of the smoke inlet is determined based on the first temperature change rate, the second temperature change rate, the cooking temperature and the panel temperature, thereby providing a judgment basis for determining the fire source monitoring status of the smoke inlet; further, the fire source monitoring status of the smoke inlet is judged to be a ignited state by the cooking temperature and the panel temperature reaching a temperature threshold, and by the combination of the change amplitude of the cooking temperature and the panel temperature reaching a change threshold, and the fire source monitoring status of the smoke inlet is judged to be a non-ignited state by the cooking temperature or the panel temperature not reaching the temperature threshold, or the change amplitude of the cooking temperature or the panel temperature not reaching the change threshold, thereby improving the accuracy of determining the fire source monitoring status of the smoke inlet.

[0059] See Figure 5 , is a flow chart of a range hood control method provided in an embodiment of the present application. Figure 5 As shown, the method of the embodiment of the present application may include the following steps S301 to S306.

[0060] S301, when the range hood is in operation, obtaining a cooking temperature of the smoke inlet area collected by a first temperature detection device and a panel temperature of the touch panel collected by a second temperature detection device;

[0061] S302, determining a first temperature change rate between cooking temperatures collected at adjacent times;

[0062] S303, determining a second temperature change rate between panel temperatures at adjacent acquisition times;

[0063] Specifically, steps S301-S303 can be found in the description of other embodiments in the above specification and will not be described in detail here.

[0064] S304, determining that the fire source monitoring state of the smoke inlet is an ignition state when the first temperature change rate within the determination time threshold is greater than or equal to the first change threshold, the second temperature change rate is greater than or equal to the second change threshold, the cooking temperature is greater than or equal to the first temperature threshold, and the panel temperature is greater than or equal to the second temperature threshold;

[0065] In one embodiment, the first temperature change rate is the rate of change of two adjacent cooking temperatures within a time period, and the first temperature change rate can be used to determine the magnitude of the cooking temperature change within the time period; the second temperature change rate is the rate of change of two adjacent panel temperatures within the time period, and the second temperature change rate can be used to determine the magnitude of the panel temperature change within the time period; the first change threshold is used to determine whether the cooking temperature change reaches a threshold indicating that the fire source monitoring status is ignited; and the second change threshold is used to determine whether the panel temperature change reaches a threshold indicating that the fire source monitoring status is ignited. In this embodiment of the present application, the first temperature threshold and the second temperature threshold can be determined in advance based on experimental data.

[0066] The duration threshold is a time window for determining the smoke inlet fire source monitoring status based on the collected panel temperature, cooking temperature, first temperature change rate, and second temperature change rate. In this embodiment of the present application, at least three panel temperatures and cooking temperatures are collected within the duration threshold, and at least two first temperature change rates and second temperature change rates are determined based on adjacent cooking temperatures and panel temperatures collected at the same time.

[0067] If it is determined that the cooking temperature collected within the time threshold is greater than or equal to the first temperature threshold and the panel temperature is greater than or equal to the second temperature threshold, the first temperature change rate is greater than or equal to the first change threshold, the second temperature change rate is greater than or equal to the second change threshold, and the fire source monitoring status of the smoke inlet is determined to be the ignition state. By judging that multiple cooking temperatures and panel temperatures collected within the time threshold reach the temperature threshold, and combining the change amplitudes of at least two cooking temperatures and panel temperatures to reach the change threshold, the fire source monitoring status of the smoke inlet is judged to be the ignition state, which can improve the accuracy and stability of determining that the fire source monitoring status of the smoke inlet is the ignition state.

[0068] S305: When the first temperature change rate at the target moment is less than the first change threshold, and / or the second temperature change rate is less than the second change threshold, and / or the cooking temperature is less than the first temperature threshold, and / or the panel temperature is less than the second temperature threshold within the determined time threshold, determining that the fire source monitoring state of the smoke inlet is an unignited state;

[0069] In one embodiment, if any one of the following conditions is met: the cooking temperature at any moment within the time threshold is less than the first temperature threshold, or the panel temperature is less than the second temperature threshold, or the first temperature change rate is less than the first change threshold, or the second temperature change rate is less than the second change threshold, the moment is determined to be the target moment, and the fire source monitoring status of the smoke inlet is determined to be an unignited state.

[0070] Furthermore, if it is determined that there are multiple target moments, the target moment closest to the current moment is taken as the initial moment, and the steps of obtaining the cooking temperature of the smoke inlet collected by the first temperature detection device and the panel temperature of the touch panel collected by the second temperature detection device are executed until multiple panel temperatures and cooking temperatures that meet the duration threshold are obtained with the target moment as the initial moment, and then the fire source monitoring status of the smoke inlet is determined based on the multiple panel temperatures and cooking temperatures within the duration threshold.

[0071] S306: When the fire source monitoring state is the ignition state, the power supply of the range hood is cut off.

[0072] Furthermore, in an embodiment of the present application, if the fire source monitoring state is determined to be an ignition state, the fan is controlled to rotate in the reverse direction, and the airflow direction of the smoke pipe is changed by rotating in the reverse direction, thereby quickly controlling the check valve to close, and then cutting off the power supply to the range hood.

[0073] It can be understood that if the fire source monitoring status of the smoke inlet is determined to be in the ignition state, the power supply of the range hood is directly turned off. At this time, the fan will still rotate at a reduced speed due to inertia, and the airflow of the fan will push the check valve to be in the open state. Gas will still flow to the smoke inlet to provide fuel for the open flame at the smoke inlet. In the present application, when the fire source monitoring status of the smoke inlet is determined to be in the ignition state, the fan is controlled to rotate in the opposite direction, and then the power supply current is cut off, which can change the direction of the airflow and quickly close the check valve.

[0074] Furthermore, in an embodiment of the present application, when it is determined that the fire source monitoring status of the smoke inlet is in an ignition state, a prompt message indicating that the fire source monitoring status of the smoke inlet is in an ignition state is output in a preset prompt manner to prompt the user to deal with the open flame generated by the smoke inlet.

[0075] The preset prompt method can be displayed on the touch panel or in the form of voice broadcast.

[0076] In an embodiment of the present application, the fire source monitoring status of the smoke inlet is determined by acquiring multiple panel temperatures, cooking temperatures, first temperature change rates, and second temperature change rates collected within a time threshold, thereby improving the accuracy and stability of determining the fire source monitoring status of the smoke inlet; and when it is determined that the panel temperature, cooking temperature, first temperature change rate, and second temperature change rate at the target moment within the time threshold do not meet the judgment condition, the target moment closest to the current moment is used as the initial moment, and multiple panel temperatures, cooking temperatures, first temperature change rates, and second temperature change rates within the time threshold are re-collected to determine the fire source monitoring status of the smoke inlet, thereby ensuring that the time window for determining the acquisition of the detection status meets the time threshold, thereby improving the accuracy of the judgment.

[0077] The following will be combined Figure 6The control method of the range hood provided in the embodiment of the present application is described in detail with reference to a specific example.

[0078] S1, start the range hood; S2, obtain the cooking temperature of the smoke inlet area collected by the first temperature detection device and obtain the panel temperature of the touch panel collected by the second temperature detection device; S3, determine the first temperature change rate between the cooking temperatures with adjacent collection times; S4, determine the second temperature change rate between the panel temperatures with adjacent collection times; S5, start the timer to determine whether the collection time reaches the time threshold; S6, determine whether any cooking temperature within the time threshold is greater than or equal to the first temperature threshold, any panel temperature is greater than or equal to the second temperature threshold, any first temperature change rate is greater than or equal to the first change threshold, and any second temperature change rate is greater than or equal to the second change threshold; S7, if so, determine that the fire source monitoring status of the smoke inlet is the ignition state, and cut off the power supply of the range hood; if not, return to execute S2.

[0079] In an embodiment of the present application, the cooking temperature of the smoke inlet area of ​​the range hood is collected by the first temperature detection device and the panel temperature of the touch panel is collected by the second temperature detection device. When it is determined that the fire source monitoring status of the smoke inlet of the range hood is in the ignition state, the power supply of the range hood is cut off. The fire source monitoring status of the smoke inlet can be accurately judged by the cooking temperature and the panel temperature, and when the fire source monitoring status of the smoke inlet is in the ignition state, the power supply of the range hood is cut off in time to avoid further spread of the fire, thereby improving the safety of using the range hood.

[0080] based on Figure 1 The following is a schematic diagram of the scene. Figure 7 , the control device of the range hood provided in the embodiment of the present application is introduced in detail. It should be noted that, Figure 7 The control device of the range hood is used to execute the present application Figure 2-Figure 6 For the convenience of explanation, only the part related to the embodiment of the present application is shown. For the specific technical details not disclosed, please refer to the present application. Figure 2-Figure 6 Specifically, the control device 1 of the range hood includes:

[0081] An acquiring unit 11 is configured to acquire, when the range hood is in operation, a cooking temperature of the smoke inlet area acquired by the first temperature detecting device and a panel temperature of the touch panel acquired by the second temperature detecting device;

[0082] a determination unit 12 for determining a fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature;

[0083] The cut-off unit 13 is used to cut off the power supply of the range hood when the fire source monitoring state is the ignition state.

[0084] Optionally, the determining unit 12 includes:

[0085] The first determining subunit 121 is configured to determine a first temperature change rate between cooking temperatures with adjacent acquisition times;

[0086] The second determining subunit 122 is configured to determine a second temperature change rate between panel temperatures at adjacent acquisition times;

[0087] The third determining subunit 123 is configured to determine the fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature.

[0088] Optionally, the third determining subunit 123 is specifically configured to:

[0089] When it is determined that the first temperature change rate is greater than or equal to the first change threshold, the second temperature change rate is greater than or equal to the second change threshold, the cooking temperature is greater than or equal to the first temperature threshold, and the panel temperature is greater than or equal to the second temperature threshold, determining that the fire source monitoring state of the smoke inlet is the ignition state;

[0090] When it is determined that the first temperature change rate is less than the first change threshold, and / or the second temperature change rate is less than the second change threshold, and / or the cooking temperature is less than the first temperature threshold, and / or the panel temperature is less than the second temperature threshold, the fire source monitoring status of the smoke inlet is determined to be an unignited state.

[0091] Optionally, the third determining subunit 123 is specifically configured to:

[0092] When the first temperature change rate within the determination time threshold is greater than or equal to the first change threshold, the second temperature change rate is greater than or equal to the second change threshold, the cooking temperature is greater than or equal to the first temperature threshold, and the panel temperature is greater than or equal to the second temperature threshold, determining that the fire source monitoring state of the smoke inlet is the ignition state;

[0093] When the first temperature change rate at the target moment is less than the first change threshold, and / or the second temperature change rate is less than the second change threshold, and / or the cooking temperature is less than the first temperature threshold, and / or the panel temperature is less than the second temperature threshold within the determined time threshold, the fire source monitoring status of the smoke inlet is determined to be an unignited state.

[0094] Optionally, the third determining subunit 123 is specifically configured to:

[0095] When there are multiple target moments, the target moment closest to the current moment is determined as the initial moment, and the steps of obtaining the cooking temperature of the smoke inlet collected by the first temperature detection device and the panel temperature of the touch panel collected by the second temperature detection device are executed.

[0096] Optionally, the cutting unit 13 includes:

[0097] The control subunit 131 is used to control the fan to rotate in the reverse direction to close the check valve when the fire source monitoring state is determined to be the ignition state;

[0098] The cut-off subunit 132 is used to cut off the power supply to the range hood.

[0099] Optionally, the range hood control device further includes:

[0100] The prompt unit 14 is used to output prompt information that the fire source monitoring status of the smoke inlet is the ignition state according to a preset prompt method.

[0101] In an embodiment of the present application, the cooking temperature of the smoke inlet area of ​​the range hood is collected by the first temperature detection device and the panel temperature of the touch panel is collected by the second temperature detection device. When it is determined that the fire source monitoring status of the smoke inlet of the range hood is in the ignition state, the power supply of the range hood is cut off. The fire source monitoring status of the smoke inlet can be accurately judged by the cooking temperature and the panel temperature, and when the fire source monitoring status of the smoke inlet is in the ignition state, the power supply of the range hood is cut off in time to avoid further spread of the fire, thereby improving the safety of using the range hood.

[0102] See Figure 8 , provides a schematic structural diagram of a range hood according to an embodiment of the present application. Figure 8 As shown, the range hood 500 includes a processor 501 and a memory 502. The processor 501 is electrically connected to the memory 502.

[0103] The processor 501 is the control center of the range hood 500 and may include one or more processing cores. Using various interfaces and circuits, the processor 501 connects all components of the range hood 500. By running or invoking computer programs stored in the memory 502 and accessing data stored there, the processor 501 executes various functions and processes data, thereby providing overall control over the range hood 500. Optionally, the processor 501 may be implemented using at least one of the following hardware forms: a digital signal processing (DSP), a field programmable gate array (FPGA), or a programmable logic array (PLA). The processor 501 may integrate one or a combination of a CPU, a graphics processing unit (GPU), and a modem. The CPU primarily processes the operating system, user interfaces, and applications; the GPU is responsible for rendering and drawing display content; and the modem handles wireless communications. It is understood that the modem may also be implemented independently of the processor 501 via a separate communication chip.

[0104] The memory 502 can be used to store software programs and modules. The processor 501 executes various functional applications and data processing by running the computer programs and modules stored in the memory 502. The memory 502 can mainly include a program storage area and a data storage area. The program storage area can store the operating system and computer programs required for at least one function. The data storage area can store data generated based on the use of the range hood 500.

[0105] In addition, the memory 502 may include a high-speed random access memory and a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device. Accordingly, the memory 502 may also include a memory controller to provide the processor 501 with access to the memory 502.

[0106] In this embodiment, the processor 501 in the range hood 500 loads instructions corresponding to one or more computer program processes into the memory 502 according to the following steps, and the processor 501 runs the computer program stored in the memory 502 to implement various functions as follows:

[0107] When the range hood is in operation, obtaining the cooking temperature of the smoke inlet area collected by the first temperature detection device and obtaining the panel temperature of the touch panel collected by the second temperature detection device;

[0108] Determine the fire source monitoring status of the smoke inlet based on the cooking temperature and panel temperature;

[0109] When the fire source monitoring status is ignition, cut off the power supply to the range hood.

[0110] Optionally, when determining the fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature, the processor 501 specifically performs:

[0111] determining a first temperature change rate between cooking temperatures adjacent in acquisition time;

[0112] determining a second temperature change rate between panel temperatures adjacent in acquisition time;

[0113] The fire source monitoring state of the smoke inlet is determined based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature.

[0114] Optionally, when determining the fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature, the processor 501 specifically performs:

[0115] When it is determined that the first temperature change rate is greater than or equal to the first change threshold, the second temperature change rate is greater than or equal to the second change threshold, the cooking temperature is greater than or equal to the first temperature threshold, and the panel temperature is greater than or equal to the second temperature threshold, determining that the fire source monitoring state of the smoke inlet is the ignition state;

[0116] When it is determined that the first temperature change rate is less than the first change threshold, and / or the second temperature change rate is less than the second change threshold, and / or the cooking temperature is less than the first temperature threshold, and / or the panel temperature is less than the second temperature threshold, the fire source monitoring status of the smoke inlet is determined to be an unignited state.

[0117] Optionally, when determining the fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature, the processor 501 specifically performs:

[0118] When the first temperature change rate within the determination time threshold is greater than or equal to the first change threshold, the second temperature change rate is greater than or equal to the second change threshold, the cooking temperature is greater than or equal to the first temperature threshold, and the panel temperature is greater than or equal to the second temperature threshold, determining that the fire source monitoring state of the smoke inlet is the ignition state;

[0119] When the first temperature change rate at the target moment is less than the first change threshold, and / or the second temperature change rate is less than the second change threshold, and / or the cooking temperature is less than the first temperature threshold, and / or the panel temperature is less than the second temperature threshold within the determined time threshold, the fire source monitoring status of the smoke inlet is determined to be an unignited state.

[0120] Optionally, after determining that the fire source monitoring state of the smoke inlet is an unignited state, the processor 501 may further execute the following when the first temperature change rate at the target moment is less than the first change threshold, and / or the second temperature change rate is less than the second change threshold, and / or the cooking temperature is less than the first temperature threshold, and / or the panel temperature is less than the second temperature threshold within the determined time threshold:

[0121] When there are multiple target moments, the target moment closest to the current moment is determined as the initial moment, and the steps of obtaining the cooking temperature of the smoke inlet collected by the first temperature detection device and the panel temperature of the touch panel collected by the second temperature detection device are executed.

[0122] Optionally, when the processor 501 cuts off the power supply of the range hood when the fire source monitoring state is the ignition state, it specifically executes:

[0123] When the fire source monitoring state is determined to be the ignition state, the fan is controlled to rotate in the reverse direction to close the check valve;

[0124] Cut off the power supply to the range hood.

[0125] Optionally, after the processor 501 cuts off the power supply to the range hood when the fire source monitoring state is the ignition state, it may further execute:

[0126] According to the preset prompt method, the prompt information that the fire source monitoring status of the smoke inlet is the ignition state is output.

[0127] In an embodiment of the present application, the cooking temperature of the smoke inlet area of ​​the range hood is collected by the first temperature detection device and the panel temperature of the touch panel is collected by the second temperature detection device. When it is determined that the fire source monitoring status of the smoke inlet of the range hood is in the ignition state, the power supply of the range hood is cut off. The fire source monitoring status of the smoke inlet can be accurately judged by the cooking temperature and the panel temperature, and when the fire source monitoring status of the smoke inlet is in the ignition state, the power supply of the range hood is cut off in time to avoid further spread of the fire, thereby improving the safety of using the range hood.

[0128] It should be understood that the device provided in the embodiment of the present application is used to execute the above-mentioned range hood control method, and thus can achieve the same effect as the above-mentioned implementation method.

[0129] In the case of an integrated unit, the device may include a processing module and a storage module. When the device is applied to a range hood, the processing module may be used to control and manage the operation of the range hood, while the storage module may be used to support the range hood in executing relevant program codes.

[0130] The processing module may be a processor or controller that implements or executes the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processing (DSP) and a microprocessor, and the storage module may be a memory.

[0131] In addition, the device provided in the embodiment of the present application can specifically be a chip, component or module, and the chip may include a connected processor and memory; wherein the memory is used to store instructions, and when the processor calls and executes the instructions, the chip can execute a range hood control method provided in the above embodiment.

[0132] An embodiment of the present application also provides a computer-readable storage medium, which stores computer program code. When the computer program code runs on a computer, the computer executes the above-mentioned related method steps to implement a range hood control method provided in the above embodiment.

[0133] This embodiment further provides a computer program product. When the computer program product is run on a computer, the computer is caused to execute the above-mentioned related steps to implement a range hood control method provided in the above embodiment.

[0134] Among them, the device, computer-readable storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0135] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0136] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0137] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A range hood control method, characterized in that: The range hood includes a power supply, a first temperature detection device, a second temperature detection device, a touch panel, and a smoke inlet, wherein the first temperature detection device collects a cooking temperature of a smoke inlet area of ​​the range hood, and the second temperature detection device collects a panel temperature of the touch panel. The method includes: When the range hood is in operation, obtaining the cooking temperature of the smoke inlet area collected by the first temperature detection device and obtaining the panel temperature of the touch panel collected by the second temperature detection device; determining a fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature; When the fire source monitoring state is an ignition state, cutting off the power supply of the range hood; The determining of the fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature includes: determining a first temperature change rate between the cooking temperatures collected at adjacent times, wherein the first temperature change rate is used to determine a change in the cooking temperature within a time period; determining a second temperature change rate between the panel temperatures collected at adjacent times, wherein the second temperature change rate is used to determine a change in the panel temperature within the time period; determining a fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature; The determining the fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature includes: When it is determined that the first temperature change rate is greater than or equal to a first change threshold, the second temperature change rate is greater than or equal to a second change threshold, the cooking temperature is greater than or equal to a first temperature threshold, and the panel temperature is greater than or equal to a second temperature threshold, the fire source monitoring status of the smoke inlet is determined to be an ignition state.

2. The method according to claim 1, characterized in that The determining of the fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature further includes: When it is determined that the first temperature change rate is less than the first change threshold, and / or the second temperature change rate is less than the second change threshold, and / or the cooking temperature is less than the first temperature threshold, and / or the panel temperature is less than the second temperature threshold, the fire source monitoring status of the smoke inlet is determined to be an unignited state.

3. The method according to claim 1, characterized in that The determining the fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature includes: When the first temperature change rate within the determination time threshold is greater than or equal to a first change threshold, the second temperature change rate is greater than or equal to a second change threshold, the cooking temperature is greater than or equal to a first temperature threshold, and the panel temperature is greater than or equal to a second temperature threshold, determining that the fire source monitoring state of the smoke inlet is an ignition state; When the first temperature change rate at the target moment within the determined time threshold is less than the first change threshold, and / or the second temperature change rate is less than the second change threshold, and / or the cooking temperature is less than the first temperature threshold, and / or the panel temperature is less than the second temperature threshold, it is determined that the fire source monitoring status of the smoke inlet is an unignited state.

4. The method according to claim 3, characterized in that After determining that the fire source monitoring state of the smoke inlet is an unignited state when the first temperature change rate at the target moment is less than the first change threshold, and / or the second temperature change rate is less than the second change threshold, and / or the cooking temperature is less than the first temperature threshold, and / or the panel temperature is less than the second temperature threshold, within the determined time threshold, the method further includes: When there are multiple target moments, the target moment closest to the current moment is determined as the initial moment, and the steps of obtaining the cooking temperature of the smoke inlet collected by the first temperature detection device and obtaining the panel temperature of the touch panel collected by the second temperature detection device are performed.

5. The method according to claim 1, wherein The range hood includes a fan and a check valve, wherein the check valve is connected to the end of the range hood and the smoke outlet pipe, and when the fire source monitoring state is the ignition state, the power supply of the range hood is cut off, including: When it is determined that the fire source monitoring state is an ignition state, controlling the fan to rotate in the reverse direction to close the check valve; Cut off the power supply of the range hood.

6. The method according to claim 1, characterized in that When the fire source monitoring state is the ignition state, after cutting off the power supply of the range hood, the method further includes: Output prompt information that the fire source monitoring status of the smoke inlet is the ignition state in a preset prompt mode.

7. A range hood control device, characterized in that: Applicable to a range hood, the range hood includes a power supply, a first temperature detection device, a second temperature detection device, a touch panel, and a smoke inlet. The first temperature detection device collects the cooking temperature of the smoke inlet area of ​​the range hood, and the second temperature detection device collects the panel temperature of the touch panel. The device includes: an acquiring unit, configured to acquire, when the range hood is in operation, the cooking temperature of the smoke inlet area acquired by the first temperature detecting device and the panel temperature of the touch panel acquired by the second temperature detecting device; a determining unit, configured to determine a fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature; a cut-off unit, configured to cut off the power supply to the range hood when the fire source monitoring state is an ignition state; The determining unit is specifically configured to determine a first temperature change rate between the cooking temperatures collected at adjacent times, wherein the first temperature change rate is used to determine a change in the cooking temperature within a time period; determining a second temperature change rate between the panel temperatures collected at adjacent times, wherein the second temperature change rate is used to determine a change in the panel temperature within the time period; determining a fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature; The determining the fire source monitoring state of the smoke inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature includes: When it is determined that the first temperature change rate is greater than or equal to a first change threshold, the second temperature change rate is greater than or equal to a second change threshold, the cooking temperature is greater than or equal to a first temperature threshold, and the panel temperature is greater than or equal to a second temperature threshold, the fire source monitoring status of the smoke inlet is determined to be an ignition state.

8. A range hood, characterized in that: The range hood comprises: a memory for storing executable program code; A processor is configured to call and run the executable program code from the memory, so that the range hood executes the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program code, and when the computer program code is executed, the method according to any one of claims 1 to 6 is implemented.

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