Range hood control method and device, range hood and storage medium

Abstract

The invention provides a control method and device of a range hood, the range hood and a storage medium, the method is applied to the field of household appliances, the range 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 is used for collecting the cooking temperature of a smoke inlet area of the range hood, and the second temperature detection device is used for collecting the panel temperature of the touch panel. The cooking temperature, collected by a first temperature detection device, of the smoke inlet area is obtained, and the panel temperature, collected by a second temperature detection device, of the touch panel is obtained; and determining a fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature, and cutting off a power supply of the range hood when the fire source monitoring state is an ignition state. The method can cut off the power supply of the range hood in time, and the safety of using the range hood is improved.

Description

Technical Field

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

[0002] A range hood is an indispensable kitchen appliance in modern families. It is usually installed above the kitchen stove and can quickly suck away the waste generated by the stove combustion and the harmful oil fumes produced during the cooking process and discharge them outdoors. When the range hood is in use, a large amount of oil stains will accumulate at the smoke inlet for adsorbing kitchen oil fumes. These oil stains are highly flammable and may be ignited in a high-temperature environment (for example, when the stove fire is too strong during stir-frying). If the range hood is still in the working state at this time, its suction and exhaust functions provide a large amount of oxygen to the smoke inlet, increasing the fire and may cause the fire to spread, reducing the safety of using the range hood. Summary of the Invention

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

[0004] In a first aspect, a control method for a range hood is provided. 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 in the smoke inlet area of the range hood, and the second temperature detection device collects the panel temperature of the touch panel. The method includes: when the range hood is in the working state, obtaining the cooking temperature in 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 the 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 the ignition state.

[0005] In a second aspect, a device for controlling a range hood is provided. The device is applied 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 in 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 obtaining unit, configured to obtain the cooking temperature in 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 when the range hood is in the working state; a determining unit, configured to determine the fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature; and a cutting-off unit, configured to cut off the power supply of the range hood when the fire source monitoring state is the ignition state.

[0006] In a third aspect, a range hood is provided, including: a memory for storing executable program code; A processor is configured to call and run executable program code from a memory, so that the range hood executes the method in the first aspect or any possible implementation manner of the first aspect as described above.

[0007] In a fourth aspect, there is provided a computer program product, which includes computer program code. When the computer program code runs on a computer, the computer is caused to execute the method in the first aspect or any possible implementation manner of the first aspect as described above.

[0008] In a fifth aspect, there is provided a computer-readable storage medium storing computer program code. When the computer program code runs on a computer, the computer is caused to execute the method in the first aspect or any possible implementation manner of the first aspect as described above.

[0009] In an embodiment of the present application, when the cooking temperature in the smoke inlet area of the range hood collected by the first temperature detection device and the panel temperature of the touch panel collected by the second temperature detection device are used to determine that the fire source monitoring state at the smoke inlet of the range hood is the ignition state, the power supply of the range hood is cut off. The cooking temperature and the panel temperature can accurately determine the fire source monitoring state at the smoke inlet, and when the fire source monitoring state at the smoke inlet is 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. Description of the Drawings

[0010] Figure 1 is a schematic diagram of a scenario of a control method for a range hood provided by an embodiment of the present application; Figure 2 is a schematic flowchart of a control method for a range hood provided by an embodiment of the present application; Figure 3 is a schematic structural diagram of a range hood provided by an embodiment of the present application; Figure 4 is a schematic flowchart of a control method for a range hood provided by an embodiment of the present application; Figure 5 is a schematic flowchart of a control method for a range hood provided by an embodiment of the present application; Figure 6 is a schematic flowchart of a control method for a range hood provided by an embodiment of the present application; Figure 7 is a schematic structural diagram of a control device for a range hood provided by an embodiment of the present application; Figure 8 is a schematic structural diagram of a range hood provided by an embodiment of the present application. Detailed Embodiments

[0011] The technical solutions in the present application will be clearly and elaborately described below in conjunction with the accompanying drawings. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B. The "and / or" in the text is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0012] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as implying or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0013] As one of the indispensable household appliances in modern kitchens, the range hood quickly discharges the oil fumes, steam, odors, and harmful substances generated during the cooking process through efficient suction, keeping the air in the kitchen fresh. However, with long-term use, a large amount of oil stains are likely to accumulate inside the range hood, especially at the smoke inlet and filter parts. These oil stains not only affect the working efficiency of the range hood but also have high flammability. During high-temperature cooking, such as stir-frying with high heat, if the oil temperature or food temperature is too high, it may cause the cooking utensils to catch fire. While the range hood extracts the oil fumes generated during the cooking process, it inhales the sparks generated by the cooking utensils, resulting in an open fire at the smoke inlet, igniting the oil stains accumulated at the smoke inlet, and further spreading rapidly throughout the range hood along with the exhaust system of the range hood, damaging the internal parts of the range hood and even threatening the safety of the entire kitchen. Especially when there are flammable items such as paper towels and oil drums around the range hood, the risk of fire will increase significantly.

[0014] Based on this, please refer to Figure 1 , Figure 1 is a schematic diagram of the scenario of a control method for a range hood provided by an embodiment of the present application. It can be understood that in Figure 1The range hood provided in [reference] is a side-suction range hood, while the range hood in the embodiments of the present application also includes a top-suction range hood, a wall-mounted range hood, etc., and the specific type of the range hood is not limited herein. For the control method of the range hood proposed in the present application, when the user starts the range hood 500 to adsorb the oil fumes generated during the cooking process, the power supply provides electrical energy to drive components such as the motor and the lighting lamp of the range hood to operate, and at the same time, the shielding panel 02 of the range hood is opened. 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 can not only improve the overall aesthetics of the range hood, but also prevent dust from entering the box body of the range hood through the open smoke inlet, or prevent the oil fumes in the flue from flowing back and causing the smoke to be discharged into the room from the smoke inlet; when the range hood needs to suck the oil fumes, the shielding panel 02 is opened, so that the smoke inlet is exposed to the outside, thereby ensuring that the oil fumes generated during cooking can be promptly sucked away by the range hood 500. After opening components such as the shielding panel and the fan, the range hood 500 enters the working state, collects the cooking temperature in the smoke inlet area of the range hood through the first temperature detection device, and collects the panel temperature of the touch panel 01 through the second temperature detection device. Based on the cooking temperature and the panel temperature, the fire source monitoring state of the smoke inlet is determined. 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 fire at the smoke inlet.

[0015] In the embodiments of the present application, when the cooking temperature in the smoke inlet area of the range hood collected by the first temperature detection device and the panel temperature of the touch panel collected by the second temperature detection device are used to determine that the fire source monitoring state of the smoke inlet of the range hood is the ignition state, the power supply of the range hood is cut off. Through the cooking temperature and the panel temperature, the fire source monitoring state of the smoke inlet can be accurately judged, and when the fire source monitoring state of the smoke inlet is the ignition state, the power supply of the range hood can be cut off in time to avoid the further spread of the fire, improving the safety of using the range hood.

[0016] Based on Figure 1 the scene schematic diagram shown, the control method of the range hood provided in the embodiments of the present application will be introduced in detail below in conjunction with Figures 2 - 6 .

[0017] Please refer to Figure 2 , which is a schematic flowchart of a control method of a range hood provided in the embodiments of the present application. As Figure 2 shown, the method of the embodiments of the present application may include the following steps S101-step S103.

[0018] S101, when the range hood is in the working state, obtain the cooking temperature in 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; The first temperature detection device collects the cooking temperature in the smoke inlet area during the cooking process. The smoke inlet area is the area formed vertically between the installation position of the first temperature detection device and the cooking appliance. Optionally, in the embodiments 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 one of an infrared temperature sensor, a thermocouple sensor, and a thermistor sensor.

[0019] It can be understood that when heating the cooking appliance, the temperature of the oil fume and steam generated by it will affect the cooking temperature in the smoke inlet area, and the heat generated by the cooking appliance will also be conducted to the air, increasing the cooking temperature in the smoke inlet area. Therefore, in the embodiments of the present application, the cooking temperature collected in the smoke inlet area includes not only the temperature of the oil fume and steam generated during the cooking process, but also the temperature generated by the heating of the cooking appliance.

[0020] 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 appliance than the top area of the range hood, can avoid heat loss during the conduction process, and improve the accuracy of the subsequent fire source monitoring status judgment of the smoke inlet based on the cooking temperature.

[0021] The second temperature sensor collects the panel temperature of the touch panel. The touch panel can be an interface for the user to interact with the range hood, and is used to control various working modes of the range hood, such as starting or closing the range hood, suction adjustment, wind speed adjustment, light control, timing function, cleaning reminder, etc. It is usually installed in the front or top of the range hood, close to the smoke inlet of the range hood for easy user operation and touch; in addition, the touch panel also has a display function, which can display not only the current working parameters of the range hood, but also 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 surface mount thermistor or a thermocouple type sensor, and the specific type of the second temperature detection device is not limited here.

[0022] S102, determine the fire source monitoring status of the smoke inlet based on the cooking temperature and the panel temperature; In one embodiment, after obtaining the cooking temperature and the panel temperature, the fire source monitoring status of the smoke inlet of the range hood is determined through the cooking temperature and the panel temperature. The fire source monitoring status is the status of detecting whether there is an open flame at the smoke inlet.

[0023] It can be understood that if the fire source monitoring status of the smoke inlet of the range hood is in the ignited state, it means that when the range hood is in the working state, the open fire generated during the heating process of the cooking appliance and the cooking fumes are inhaled into the smoke inlet of the range hood, causing the accumulated oil stains at the smoke inlet to be ignited, and there is an open fire at the smoke inlet. It is determined that the fire source monitoring status of the smoke inlet is in the ignited state. Since the installation position of the touch panel is relatively 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. In the case of an open fire at the smoke inlet, the panel temperature of the touch panel obtained by the second temperature detection device is usually relatively high; when an open fire is generated by the cooking appliance, due to the high temperature of the open fire, the temperature conducted in the smoke inlet area of the range hood will also increase. Thus, it can be determined whether there is an open fire in the cooking appliance based on the cooking temperature of the smoke inlet area obtained by the first temperature detection device, and then the fire source monitoring status of the smoke inlet can be determined based on the cooking temperature and the panel temperature, which can improve the accuracy of determining the fire source monitoring status and avoid the error caused by judging with a single temperature data.

[0024] Optionally, in the embodiment of the present application, it can be determined that the fire source monitoring status of the smoke inlet is in the ignited state when it is determined that 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; 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, it is determined that the fire source monitoring status of the smoke inlet is in the unignited state, where the ignited state is the state when an open fire is generated at the smoke inlet; the unignited state is the state when no open fire is generated at the smoke inlet.

[0025] S103, when the fire source monitoring status is in the ignited state, cut off the power supply of the range hood.

[0026] Please refer to Figure 3 , Figure 3 As a structural schematic diagram 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 the processor obtains 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 it determines that the fire source monitoring status of the smoke inlet is in the ignited state based on the cooking temperature and the panel temperature, it sends a power cut-off signal for cutting off the power supply of the range hood to the power board. The power board stops providing power to the main motor assembly, cuts off the power supply of the range hood, and the range hood stops working. The main motor assembly is the core driving component of the range hood, which is responsible for providing driving force to drive the fan of the range hood to rotate, thereby generating suction to adsorb gases such as cooking fumes and odors in the kitchen.

[0027] It should be noted that after cutting off the power supply of the range hood, the fan of the range hood stops working and no longer generates suction, that is, it will no longer continue to suck in the oil fumes generated during the cooking process, which can avoid continuously sucking the open fire generated by the cooking appliance into the air inlet when the fire source monitoring state at the air inlet is in the ignition state, exacerbating the fire at the air inlet; and it can avoid sucking in a large amount of oxygen to provide an oxidizer for the fire source at the air inlet.

[0028] In the embodiment of the present application, when it is determined that the fire source monitoring state at the air inlet of the range hood is in the ignition state by collecting the cooking temperature in the air inlet area of the range hood through the first temperature detection device and the panel temperature of the touch panel collected by the second temperature detection device, the power supply of the range hood is cut off. The cooking temperature and the panel temperature can accurately judge the fire source monitoring state at the air inlet, and when the fire source monitoring state at the air inlet is in the ignition state, the power supply of the range hood is cut off in time to avoid the further spread of the fire, improving the safety of using the range hood.

[0029] Please refer to Figure 4 , which is a schematic flowchart of a control method for a range hood provided by an embodiment of the present application. As Figure 4 shown, the method of the embodiment of the present application may include the following steps S201-step S205.

[0030] S201, when the range hood is in the working state, obtain the cooking temperature in the air inlet area collected by the first temperature detection device and the panel temperature of the touch panel collected by the second temperature detection device; Specifically, please refer to the description of step S101 in the above-mentioned specification embodiment, which will not be elaborated here.

[0031] S202, determine the first temperature change rate between the cooking temperatures with adjacent collection times; In one embodiment, there are two cooking temperatures, and the first temperature change rate between the two cooking temperatures with adjacent collection times is obtained.

[0032] Optionally, the cooking temperature includes a first temperature and a second temperature, where the first temperature is the cooking temperature in the air inlet area collected 0.1 second after the range hood enters the working state, and the second temperature is the cooking temperature in the air inlet area collected by the range hood at 0.3 second. The first temperature detection device collects the cooking temperature in the air inlet 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.

[0033] S203, determine the second temperature change rate between the panel temperatures with adjacent collection times; In one embodiment, there are two panel temperatures, and the second temperature change rate between the two panel temperatures with adjacent collection times is obtained.

[0034] 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 at the 0.1 second after the range hood enters the working state, and the fourth temperature is the panel temperature of the touch panel collected at the 0.3 second of the range hood. The third temperature detection device collects the panel temperature of the touch panel at a time period of 0.2 seconds, then the second temperature change rate = (the fourth temperature - the third temperature) / T.

[0035] S204. Determine the fire source monitoring status of the air inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature; In one embodiment, after obtaining the cooking temperatures of at least two air inlet areas and the panel temperature of the touch panel, determine the fire source monitoring status of the air inlet based on the cooking temperature, the panel temperature, the first temperature change rate obtained from two adjacent cooking temperatures in terms of the collection time, and the second temperature change rate obtained from two adjacent panel temperatures in terms of the collection time.

[0036] Further, determining the fire source monitoring status of the air inlet based on the first temperature change rate, the second temperature change rate, the cooking temperature, and the panel temperature includes: S2041. 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, determine that the fire source monitoring status of the air inlet is the ignition state; The first temperature change rate is the change rate of two adjacent cooking temperatures within the time period. Through the first temperature change rate, the change magnitude of the cooking temperature within the time period can be judged; the second temperature change rate is the change rate of two adjacent panel temperatures within the time period. Through the second temperature change rate, the change magnitude of the panel temperature within the time period can be judged; the first change threshold is the threshold for judging whether the change of the cooking temperature reaches the ignition state of the fire source monitoring status; the second change threshold is the threshold for judging whether the change of the panel temperature reaches the ignition state of the fire source monitoring status. In the embodiments of the present application, the first temperature threshold and the second temperature threshold can be determined in advance through experimental data.

[0037] It can be understood that when the fire source monitoring status at the smoke inlet is in the ignition state, the cooking temperature in 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, it is determined that the fire source monitoring status at the smoke inlet is in the ignition state. By means of the cooking temperature and the panel temperature reaching the temperature threshold, and combining the change amplitude of the cooking temperature and the panel temperature reaching the change threshold, judging that the fire source monitoring status at the smoke inlet is in the ignition state can improve the accuracy of determining that the fire source monitoring status at the smoke inlet is in the ignition state.

[0038] 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 at the smoke inlet is in the unignited state.

[0039] In one embodiment, when it is determined that any one of 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 is satisfied, it is determined that the fire source monitoring status at the smoke inlet is in the unignited state.

[0040] S205. When the fire source monitoring status is in the ignition state, cut off the power supply of the range hood.

[0041] In one embodiment, when the fire source monitoring status is in the ignition state, cut off the power supply of the range hood. It can be understood that after cutting off the power supply of the range hood, the range hood fan stops working and no longer generates suction, that is, it will no longer continue to suck in the cooking fumes generated during the cooking process, which can avoid continuing to suck the open flame generated by the cooking appliance into the smoke inlet when the fire source monitoring status at the smoke inlet is in the ignition state, further intensifying the fire at the smoke inlet; and it can avoid sucking in a large amount of oxygen to provide an oxidizer for the fire source at the smoke inlet.

[0042] In the embodiments of the present application, by determining the first temperature change rate between cooking temperatures with adjacent acquisition times and the second temperature change rate between panel temperatures with adjacent acquisition times, and then 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, a judgment basis is provided for determining the fire source monitoring state of the smoke inlet; further, by the cooking temperature and the panel temperature reaching the temperature threshold, and in combination with the change range of the cooking temperature and the panel temperature reaching the change threshold, it is determined that the fire source monitoring state of the smoke inlet is the lit state, and by the cooking temperature or the panel temperature not reaching the temperature threshold, or the change range of the cooking temperature or the panel temperature not reaching the change threshold, it is determined that the fire source monitoring state of the smoke inlet is the unlit state, which can improve the accuracy of determining the fire source monitoring state of the smoke inlet.

[0043] Please refer to Figure 5 , which is a schematic flowchart of a control method for an oil fume machine provided by an embodiment of the present application. As Figure 5 shown, the method of the embodiment of the present application may include the following steps S301 - step S306.

[0044] S301, when the oil fume machine is in the working state, 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; S302, determine the first temperature change rate between cooking temperatures with adjacent acquisition times; S303, determine the second temperature change rate between panel temperatures with adjacent acquisition times; Specifically, for steps S301 - S303, please refer to the descriptions of other embodiments of the above specification and will not be elaborated here.

[0045] S304, when the first temperature change rate within the determined duration 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, determine that the fire source monitoring state of the smoke inlet is the lit state; In one embodiment, the first temperature change rate is the change rate of two adjacent cooking temperatures within a time period. Through the first temperature change rate, the change magnitude of the cooking temperature within the time period can be judged; the second temperature change rate is the change rate of two adjacent panel temperatures within a time period. Through the second temperature change rate, the change magnitude of the panel temperature within the time period can be judged; the first change threshold is the threshold for judging whether the change of the cooking temperature reaches the lit state of the fire source monitoring state; the second change threshold is the threshold for judging whether the change of the panel temperature reaches the lit state of the fire source monitoring state. In the embodiments of the present application, the first temperature threshold and the second temperature threshold can be determined in advance through experimental data.

[0046] The duration threshold is a time window for determining the fire source monitoring status of the smoke inlet based on the temperature of the collection panel, the cooking temperature, the first temperature change rate, and the second temperature change rate. In the embodiments of the present application, at least three of the panel temperature and the cooking temperature are collected within the duration threshold, and then at least two of the first temperature change rate and the second temperature change rate determined based on the cooking temperature and the panel temperature with adjacent collection times respectively exist.

[0047] When it is determined that the cooking temperature collected within the duration 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 the multiple cooking temperatures and panel temperatures collected within the duration threshold reach the temperature threshold, and combining the change amplitudes of at least two cooking temperatures and panel temperatures to reach the change threshold, determining the fire source monitoring status of the smoke inlet to be the ignition state can improve the accuracy and stability of determining the fire source monitoring status of the smoke inlet to be the ignition state.

[0048] S305. When it is determined that the first temperature change rate at the target moment within the duration 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, determine that the fire source monitoring status of the smoke inlet is the unignited state; In one embodiment, if any one of the conditions that the cooking temperature at any moment within the duration 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 is satisfied, determine that moment as the target moment, and determine that the fire source monitoring status of the smoke inlet is the unignited state.

[0049] Furthermore, if it is determined that there are multiple target moments, then taking the target moment closest to the current moment as the initial moment, perform 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, until multiple panel temperatures and cooking temperatures that satisfy the duration threshold are obtained with the target moment as the initial moment, and then determine the fire source monitoring status of the smoke inlet based on the multiple panel temperatures and cooking temperatures within the duration threshold.

[0050] S306. When the fire source monitoring status is the ignition state, cut off the power supply of the range hood.

[0051] Further, in the embodiment of the present application, if it is determined that the fire source monitoring state is the ignition state, the fan is controlled to rotate in the reverse direction, and the air flow direction of the smoke pipe is changed by the reverse rotation, so as to quickly control the check valve to close, and then the power supply of the range hood is cut off.

[0052] It can be understood that if the power supply of the range hood is directly cut off when it is determined that the fire source monitoring state of the air inlet is the ignition state, at this time, the fan will still rotate at a reduced speed due to inertia, and the air flow of the fan will push the check valve to be in the open state, and there is still gas flowing towards the air inlet, providing fuel for the open fire at the air inlet. However, in the present application, when it is determined that the fire source monitoring state of the air inlet is the ignition state, the fan is controlled to rotate in the reverse direction, and then the power supply current is cut off, which can change the air flow direction and quickly close the check valve.

[0053] Further, in the embodiment of the present application, when it is determined that the fire source monitoring state of the air inlet is the ignition state, a prompt message indicating that the fire source monitoring state of the air inlet is the ignition state is output in a preset prompt manner to prompt the user to handle the open fire generated at the air inlet.

[0054] The preset prompt manner can be display on the touch panel or voice broadcast.

[0055] In the embodiment of the present application, by obtaining a plurality of panel temperatures, cooking temperatures, first temperature change rates, and second temperature change rates collected within the duration threshold to determine the fire source monitoring state of the air inlet, the accuracy and stability of determining the fire source monitoring state of the air inlet can be improved; 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 duration threshold do not meet the judgment conditions, taking the target moment closest to the current moment as the initial moment, and re-collecting a plurality of panel temperatures, cooking temperatures, first temperature change rates, and second temperature change rates within the duration threshold to determine the fire source monitoring state of the air inlet can ensure that the time window for judging and obtaining the detection state meets the duration threshold and improve the accuracy of the judgment.

[0056] The following will be combined with Figure 6 specific examples to introduce in detail the control method of the range hood provided by the embodiment of the present application.

[0057] S1. Start the range hood; S2. Obtain the cooking temperature in 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; S3. Determine the first temperature change rate between adjacent cooking temperatures at the acquisition time; S4. Determine the second temperature change rate between adjacent panel temperatures at the acquisition time; S5. Start the timer to time, and determine whether the acquisition duration reaches the duration threshold; S6. Determine whether any cooking temperature within the duration 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.

[0058] In the embodiment of the present application, by obtaining the cooking temperature in the smoke inlet area of the range hood collected by the first temperature detection device and the panel temperature of the touch panel collected by the second temperature detection device, when determining that the fire source monitoring status of the smoke inlet of the range hood is 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 through the cooking temperature and the panel temperature, and when the fire source monitoring status of the smoke inlet is the ignition state, the power supply of the range hood is cut off in time to avoid the further spread of the fire, improving the safety of using the range hood.

[0059] Based on Figure 1 the scene schematic diagram, the control device of the range hood provided in the embodiment of the present application will be introduced in detail below. It should be noted that Figure 7 the control device of the range hood in Figure 7 is used to execute the method of the embodiment of the present application Figures 2 - 6 shown. For the sake of convenience of description, only the parts related to the embodiment of the present application are shown. For the specific technical details not disclosed, please refer to the embodiment Figures 2 - 6 shown in the present application. Specifically, the control device 1 of the range hood includes: An acquisition unit 11, configured to obtain the cooking temperature in 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 the working state; A determination unit 12, configured to determine the fire source monitoring status of the smoke inlet based on the cooking temperature and the panel temperature; A cut-off unit 13, configured to cut off the power supply of the range hood when the fire source monitoring status is the ignition state.

[0060] Optionally, the determination unit 12 includes: A first determination subunit 121, configured to determine the first temperature change rate between adjacent cooking temperatures at the acquisition time; The second determination subunit 122 is configured to determine a second temperature change rate between panel temperatures with adjacent acquisition times; The third determination subunit 123 is configured to determine 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.

[0061] Optionally, the third determination subunit 123 is specifically configured to: 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, determine that the fire source monitoring state of the smoke inlet is the ignition state; 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, determine that the fire source monitoring state of the smoke inlet is the unignited state.

[0062] Optionally, the third determination subunit 123 is specifically configured to: When it is determined that the first temperature change rate within the duration 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, determine that the fire source monitoring state of the smoke inlet is the ignition state; When it is determined that there is a target moment within the duration threshold where 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, determine that the fire source monitoring state of the smoke inlet is the unignited state.

[0063] Optionally, the third determination subunit 123 is specifically configured to: When there are multiple target moments, determine the target moment closest to the current moment as the initial moment, and perform 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.

[0064] Optionally, the cut-off unit 13 includes: The control subunit 131 is configured to control the fan to rotate in the reverse direction to close the check valve when it is determined that the fire source monitoring state is the ignition state; The cut-off subunit 132 is configured to cut off the power supply of the range hood.

[0065] Optionally, the control device of the range hood further includes: A prompt unit 14 is configured to output prompt information indicating that the fire source monitoring status of the smoke inlet is in a lit state according to a preset prompt manner.

[0066] In the embodiment of the present application, when the cooking temperature in the smoke inlet area of the range hood is collected by the first temperature detection device and the panel temperature of the touch panel collected by the second temperature detection device are used to determine that the fire source monitoring status of the smoke inlet of the range hood is in a lit state, the power supply of the range hood is cut off. The cooking temperature and the panel temperature can accurately judge the fire source monitoring status of the smoke inlet, and when the fire source monitoring status of the smoke inlet is in a lit state, the power supply of the range hood is cut off in time to avoid the further spread of the fire, thereby improving the safety of using the range hood.

[0067] Please refer to Figure 8 , which is a schematic structural diagram of a range hood provided by an embodiment of the present application. As Figure 8 shown, the range hood 500 includes a processor 501 and a memory 502. Among them, the processor 501 is electrically connected to the memory 502.

[0068] The processor 501 is the control center of the range hood 500 and may include one or more processing cores. The processor 501 connects various parts of the entire range hood 500 through various interfaces and lines. By running or calling the computer program stored in the memory 502 and calling the data stored in the memory 502, it executes various functions of the range hood 500 and processes data, thereby performing overall control of the range hood 500. Optionally, the processor 501 may be implemented in at least one hardware form of digital signal processing (DSP), field programmable gate array (FPGA), and programmable logic array (PLA). The processor 501 may integrate one or a combination of several of a CPU, a graphics processing unit (GPU), and a modem. Among them, the CPU mainly processes the operating system, user pages, and application programs, etc.; the GPU is responsible for rendering and drawing the displayed content; the modem is used to process wireless communication. It can be understood that the above modem may not be integrated into the processor 501 and may be implemented separately by a communication chip.

[0069] 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 mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system, computer programs required for at least one function, etc.; the data storage area can store data created according to the use of the range hood 500, etc.

[0070] In addition, the memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices. Correspondingly, the memory 502 may further include a memory controller to provide the processor 501 with access to the memory 502.

[0071] In this embodiment, the processor 501 in the range hood 500 loads the instructions corresponding to the processes of one or more computer programs into the memory 502 according to the following steps, and the processor 501 runs the computer programs stored in the memory 502 to implement various functions, as follows: When the range hood is in the working state, 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; Determine the fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature; When the fire source monitoring state is the ignition state, cut off the power supply of the range hood.

[0072] Optionally, when the processor 501 executes to determine the fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature, it specifically executes: Determine the first temperature change rate between the cooking temperatures with adjacent acquisition times; Determine the second temperature change rate between the panel temperatures with adjacent acquisition times; 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.

[0073] Optionally, when the processor 501 executes 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, it specifically executes: 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, determine that the fire source monitoring state of the smoke inlet is the ignition state; 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 state of the smoke inlet is the unlit state.

[0074] Optionally, when the processor 501 determines 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, it specifically performs: When it is determined that the first temperature change rate within the duration 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, it is determined that the fire source monitoring state of the smoke inlet is the lit state; When it is determined that within the duration threshold, there is a target moment when 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 state of the smoke inlet is the unlit state.

[0075] Optionally, after the processor 501 determines that when there is a target moment within the duration threshold when 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, and determines that the fire source monitoring state of the smoke inlet is the unlit state, it may further perform: When there are multiple target moments, determine the target moment closest to the current moment as the initial moment, and perform 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.

[0076] Optionally, when the processor 501 cuts off the power supply of the range hood when the fire source monitoring state is the lit state, it specifically performs: When it is determined that the fire source monitoring state is the lit state, control the fan to rotate in the reverse direction to close the check valve; Cut off the power supply of the range hood.

[0077] Optionally, after the processor 501 cuts off the power supply of the range hood when the fire source monitoring state is the lit state, it may further perform: Output a prompt message indicating that the fire source monitoring state of the smoke inlet is the lit state according to a preset prompt method.

[0078] In the embodiment of the present application, when the cooking temperature in 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, and it is determined that the fire source monitoring state of the smoke inlet of the range hood is in the ignition state, the power supply of the range hood is cut off. The cooking temperature and the panel temperature can accurately judge the fire source monitoring state of the smoke inlet, and when the fire source monitoring state of the smoke inlet is in the ignition state, the power supply of the range hood is cut off in time to avoid the further spread of the fire, improving the safety of using the range hood.

[0079] It should be understood that the device provided in the embodiment of the present application is used to execute the above control method of a range hood, so the same effect as the above implementation method can be achieved.

[0080] In the case of adopting an integrated unit, the device may include a processing module and a storage module. Among them, when the device is applied to a range hood, the processing module can be used to control and manage the actions of the range hood. The storage module can be used to support the range hood to execute relevant program codes, etc.

[0081] Among them, the processing module can be a processor or a controller, which can implement or execute various exemplary logical blocks, modules and circuits described in combination with the disclosure of the present application. The processor can also be a combination that realizes computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage module can be a memory.

[0082] In addition, the device provided in the embodiment of the present application can specifically be a chip, a component or a module. The chip may include a processor and a memory connected thereto; among them, the memory is used to store instructions, and when the processor calls and executes the instructions, the chip can execute the control method of a range hood provided in the above embodiment.

[0083] The embodiment of the present application also provides a computer-readable storage medium, in which computer program code is stored. When the computer program code runs on a computer, the computer is enabled to execute the above-related method steps to implement the control method of a range hood provided in the above embodiment.

[0084] The present embodiment also provides a computer program product. When the computer program product runs on a computer, the computer is enabled to execute the above-related steps to implement the control method of a range hood provided in the above embodiment.

[0085] Among them, the device, computer-readable storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be elaborated here.

[0086] Through the description of the above embodiments, those skilled in the art can understand that for the convenience and simplicity of description, only the above division of each functional module is used as an example. In actual applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0087] In the embodiments provided in this application, it should be understood that the disclosed device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point, the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be electrical, mechanical or other forms.

[0088] The above content is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application, and all should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A control method for an oil fume machine, 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. The first temperature detection device collects the cooking temperature in the smoke inlet area of the range hood, and the second temperature detection device collects the panel temperature of the touch panel. The method includes: When the range hood is in the working state, obtain the cooking temperature in 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; Determine the fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature; When the fire source monitoring state is the ignition state, cut off the power supply of the range hood.

2. The method according to claim 1, characterized in that, The determining the fire source monitoring state of the smoke inlet based on the cooking temperature and the panel temperature includes: Determine a first temperature change rate between the cooking temperatures with adjacent collection times; Determine a second temperature change rate between the panel temperatures with adjacent collection times; 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.

3. The method according to claim 2, wherein 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, determine that the fire source monitoring state of the smoke inlet is the ignition state; 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, determine that the fire source monitoring state of the smoke inlet is the non-ignition state.

4. The method according to claim 2, wherein 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 within a duration 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, determine that the fire source monitoring state of the smoke inlet is the ignition state; When it is determined that there is a target time within the duration threshold such 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, determine that the fire source monitoring state of the smoke inlet is the non-ignition state.

5. The method according to claim 4, characterized in that, After determining that 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, and then determining that the fire source monitoring state of the smoke inlet is the unlit state, the method further includes: When there are multiple target moments, determining the target moment closest to the current moment as the initial moment, and performing 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.

6. The method according to claim 1, characterized in that, The range hood includes a fan and a check valve. The check valve connects the end of the range hood to the smoke outlet pipe. When the fire source monitoring state is the lit state, cutting off the power supply of the range hood includes: When determining that the fire source monitoring state is the lit state, controlling the fan to rotate in the reverse direction to close the check valve; Cutting off the power supply of the range hood.

7. The method according to claim 1, wherein After cutting off the power supply of the range hood when the fire source monitoring state is the lit state, the method further includes: Outputting a prompt message indicating that the fire source monitoring state of the smoke inlet is the lit state according to a preset prompt method.

8. A control device for an oil fume machine, characterized in that, Applied 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 in 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, configured to, when the range hood is in the working state, acquire the cooking temperature in the smoke inlet area collected by the first temperature detection device and acquire the panel temperature of the touch panel collected by the second temperature detection device; A determination unit, configured to determine the 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 of the range hood when the fire source monitoring state is the lit state.

9. An oil fume extractor, characterized in that, The range hood includes: A memory, configured to store executable program codes; A processor, configured to call and run the executable program codes from the memory, so that the range hood executes the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program codes, and when the computer program codes are executed, the method according to any one of claims 1 to 7 is implemented.

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