Method for linking range hood and cooktop, system thereof and range hood

Abstract

The application relates to a linkage method and system of a range hood and a cooking appliance and the range hood, which can solve the safety problem thoroughly while being convenient for users to use. The linkage method of the range hood and the cooking appliance comprises the following steps: identifying a plurality of specific areas of a kitchen, wherein the plurality of specific areas at least include a cooking area, a side dish area and an access area; obtaining the activity state of a user in the plurality of specific areas within a predetermined time when the cooking appliance is turned off; and judging the cooking state of the user based on the activity state of the user in the plurality of specific areas, so as to control the range hood to switch to a standby state when the cooking interval is determined, and control the range hood to switch to an off state when the cooking is completed.

Description

Technical Field

[0001] This application relates to the field of smart kitchen technology, and in particular to a method and system for linking a range hood and a cooktop, as well as the range hood itself. Background Technology

[0002] As an essential part of family life, the kitchen, with its profound and sophisticated Chinese cooking techniques (such as stir-frying over high heat or steaming and stewing over low heat), makes range hoods and cooktops indispensable assistants. To facilitate simultaneous use of range hoods and cooktops, major manufacturers now offer various linkage methods, such as wireless linkage: turning the cooktop knob to turn on the gas automatically notifies the range hood to turn on via wireless communication, causing it to turn on immediately; turning the cooktop knob to turn off the gas automatically notifies the range hood to turn off via wireless communication, causing it to turn off immediately or automatically after a certain delay.

[0003] However, although the wireless linkage allows the range hood to detect the movement of the cooktop knob and thus whether the stove is on or off, in actual home cooking, users typically turn off the stove between dishes to wash pots or prepare ingredients for the next dish. This interval is unpredictable and sometimes exceeds the manufacturer's preset stove-off delay time, causing the range hood to shut off before all cooking is complete. When the customer turns the stove knob back on, the range hood restarts. For range hoods with large moving parts, such as lift-type range hoods, this causes the moving parts to open and close repeatedly, affecting their lifespan and causing inconvenience to the user. The range hood is turned on and off several times for every dish cooked, requiring the moving parts to move repeatedly.

[0004] Furthermore, in real-world cooking scenarios, users may leave the kitchen in emergencies such as a crying child or making a phone call, forgetting to turn off the stove until they smell something burning inside the pot, sometimes even leading to fires. While some manufacturers have introduced anti-dry-burning stoves that use a metal temperature probe pressed against the bottom of the pot to measure its temperature and immediately shut off the flame in case of dry burning, these systems are prone to false alarms due to variations in pot thickness, material, or food type, forcibly shutting off the stove burner under normal cooking conditions, leading to user complaints. Additionally, the use of anti-dry-burning metal probes can cause some traditional round-bottomed woks to become unstable, indicating a certain degree of compatibility with different pot types. Summary of the Invention

[0005] In view of the above-mentioned existing technology, a method and system for linking a range hood and a cooktop is provided, along with a range hood that can accurately observe the user's behavior in actual cooking scenarios and make decisions that match the user's wishes, so as to completely solve the safety problem while making it convenient for the user.

[0006] According to one aspect of this application, a method for linking a range hood and a cooktop is provided, comprising the steps of: identifying multiple specific areas in the kitchen, wherein the multiple specific areas include at least a cooking area, a food preparation area, and an entry / exit area; acquiring the user's activity status in the multiple specific areas within a predetermined time after the cooktop is turned off; and determining the user's cooking status based on the user's activity status in the multiple specific areas, so as to control the range hood to switch to a standby state when it is determined to be a cooking break; and controlling the range hood to switch to a power-off state when it is determined to be cooking complete.

[0007] In one embodiment of this application, the activity status includes at least the frequency and time span of the user's activities in the plurality of specific areas.

[0008] In one embodiment of this application, the step of obtaining the user's activity status in the multiple specific areas within a predetermined time after the stove is turned off includes the steps of: recording the number of times the user is present in the cooking area and the preparation area and the duration of each stay within the predetermined time after the stove is turned off, to obtain an array of stay times in the cooking area and an array of stay times in the preparation area; and / or, recording the number of times the user leaves the entry / exit area, the number of times the user enters, and the duration of each leave within the predetermined time after the stove is turned off, to obtain an array of leave counts, an array of entry counts, and an array of leave stay times.

[0009] In one embodiment of this application, the step of determining the user's cooking state based on the user's activity state in the multiple specific areas includes the following steps: in response to the fact that some elements in the food preparation area stay time array have a time greater than a first preset stay time threshold, and there is no value in the exit stay time array or the time of each element in the exit stay time array is less than a second preset stay time threshold, the user's cooking state is determined to be a cooking break, so as to control the range hood to switch to standby state.

[0010] In one embodiment of this application, the step of determining the user's cooking status based on the user's activity status in the multiple specific areas includes the following steps: in response to the fact that the number of times the user leaves is greater than the number of times the user enters, the time of each element in the food preparation area dwell time array is less than a third preset dwell time threshold, and the time of some elements in the leave dwell time array is greater than a second preset dwell time threshold, the user's cooking status is determined to be cooking completed, so as to control the range hood to switch to the off state.

[0011] In one embodiment of this application, the first preset dwell time threshold is between 1.5 min and 2.5 min.

[0012] In one embodiment of this application, the second preset dwell time threshold is between 9 min and 11 min.

[0013] In one embodiment of this application, the third preset dwell time threshold is between 0.5 min and 1.5 min.

[0014] In one embodiment of this application, the predetermined time is between 15 minutes and 25 minutes.

[0015] In one embodiment of this application, the linkage method between the range hood and the stove further includes the step of: during the period when the stove is on, simultaneously acquiring the time the user stays outside the entry / exit area and the temperature of the stove area, so as to notify the stove to turn off when the time spent outside is greater than a fourth preset time threshold and the temperature rise coefficient of the stove is greater than a preset temperature rise coefficient threshold or the temperature of the stove area is greater than a preset temperature threshold.

[0016] In one embodiment of this application, the fourth preset dwell time threshold is between 10 min and 15 min.

[0017] In one embodiment of this application, the preset temperature rise coefficient threshold is between 0.9℃ / s and 1.5℃ / s.

[0018] In one embodiment of this application, the preset temperature threshold is between 150°C and 200°C.

[0019] In one embodiment of this application, the step of identifying multiple specific areas of the kitchen includes the steps of: detecting the location area where the user is located when the stove is turned on or off, and identifying it as the cooking area; detecting multiple movements of the user between the cooking area and another location area during the period when the stove is on, and identifying the other location area as the food preparation area; and detecting the location area where the user enters or exits the kitchen each time, and identifying it as the entry / exit area.

[0020] In one embodiment of this application, the step of identifying multiple specific areas of the kitchen further includes the step of: after the stove is turned off, after detecting that the user has stayed in another location area for a period of time, the stove is turned on again to verify that the other location area is the food preparation area.

[0021] In one embodiment of this application, in the step of identifying multiple specific areas of the kitchen: the user's location information is detected by a sensing module.

[0022] In one embodiment of this application, the user's location information includes at least the angle and / or distance of the user's location.

[0023] In one embodiment of this application, with the sensing module or the range hood as the center, the area with a radius less than R1 is marked as the cooking area, the area with a radius greater than or equal to R1 and less than or equal to R2 is marked as the food preparation area, and the area with a radius greater than R2 is marked as the entry and exit area.

[0024] In one embodiment of this application, the sensing module is selected from one or more of millimeter-wave radar, infrared detector, and camera.

[0025] According to another aspect of this application, one embodiment of this application further provides a linkage system between a range hood and a cooktop, including: a zone identification module for identifying multiple specific zones in the kitchen, wherein the multiple specific zones include at least a cooking zone, a food preparation zone, and an entrance / exit zone; a status acquisition module for acquiring the user's activity status in the multiple specific zones within a predetermined time after the cooktop is turned off; and a judgment control module for judging the user's cooking status based on the user's activity status in the multiple specific zones, so as to control the range hood to switch to a standby state when it is judged to be a cooking break, and to control the range hood to switch to a power-off state when it is judged to be cooking completed.

[0026] According to another aspect of this application, one embodiment of this application further provides a range hood that applies the linkage method between the range hood and the cooktop described in any of the above claims.

[0027] In one embodiment of this application, the motion mechanism in the range hood is maintained in the on position during cooking breaks.

[0028] In summary, the linkage method between the range hood and the cooktop in this application can accurately determine whether the user is preparing ingredients for the next dish or leaving the cooking area to dine after the cooktop is turned off by marking the activity of people in specific areas of the kitchen. This guides the range hood on whether it should be turned off after the cooktop knob is turned off, or whether it should be put into standby mode, waiting for the customer to prepare the ingredients and turn it on again, thus avoiding frequent on / off cycles of the range hood.

[0029] Furthermore, the linkage method between the range hood and the stove in this application can accurately determine dangerous scenarios such as dry burning when unattended, and control the range hood to notify the stove to turn off the fire via the wireless linkage module. This can not only avoid false alarms due to differences in the thickness, material, or food of the cookware, but also completely solve safety problems such as dry burning and improve the user experience. Attached Figure Description

[0030] Figure 1 This is a flowchart illustrating a method for linking a range hood and a cooktop according to an embodiment of this application.

[0031] Figure 2 A flowchart illustrating the state acquisition step in the linkage method between a range hood and a cooktop according to the above embodiments of this application is shown.

[0032] Figure 3 A flowchart illustrating the determination and control step in the linkage method between a range hood and a cooktop according to the above embodiments of this application is shown.

[0033] Figure 4 A flowchart illustrating the area identification step in the linkage method between a range hood and a cooktop according to the above embodiments of this application is shown.

[0034] Figure 5 This is a block diagram of a linkage system between a range hood and a cooktop according to an embodiment of this application;

[0035] Figure 6 This is a side view of a range hood according to one embodiment of this application;

[0036] Figure 7 A schematic diagram showing the areas of the range hood according to the above embodiments of this application, marked by distance, in the kitchen;

[0037] Figure 8 A schematic diagram of the areas in a kitchen marked by angles for the range hood according to the above embodiments of this application is shown;

[0038] Figure 9 A schematic diagram showing the relative positions of the range hood and the cooktop according to the above embodiments of this application is provided.

[0039] Explanation of key component symbols:

[0040] 1. Range hood; 10. Linkage system between range hood and cooktop; 11. Area identification module; 12. Status acquisition module; 13. Judgment and control module; 20. Main body of range hood; 21. Fan system; 22. Smoke collection chamber; 23. Motion mechanism; 30. Sensor assembly; 31. Millimeter-wave radar; 32. Infrared temperature probe; 2. Cooktop.

[0041] The above description of the main component symbols, together with the accompanying drawings and specific embodiments, provides a further detailed explanation of this application. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] Considering that existing wireless linkage methods between range hoods and cooktops are prone to misjudgment during cooking breaks, causing the moving mechanisms of range hoods, such as lift-type range hoods, to repeatedly open and close, not only affects the lifespan of the moving mechanisms but also causes inconvenience to users, as the range hood will turn on and off several times for every few dishes cooked, and the moving mechanisms will move accordingly. Therefore, this application creatively provides a linkage method and system for range hoods and cooktops, as well as a range hood that can accurately observe the user's behavior in actual cooking scenarios and make decisions that match the user's intentions, thereby completely solving safety issues while providing convenience to the user.

[0048] Specifically, such as Figure 1 As shown, one embodiment of this application provides a method for linking a range hood and a cooktop, which may include the following steps:

[0049] S100: Identifies multiple specific areas of the kitchen, including at least a cooking area, a food preparation area, and an access area;

[0050] S200: Within a predetermined time after the stove is turned off, obtain the user's activity status in multiple specific areas;

[0051] S300: Based on the user's activity status in multiple specific areas, determine the user's cooking status, and control the range hood to switch to standby mode when it is determined to be a cooking break; and control the range hood to switch to the off mode when it is determined to be cooking complete.

[0052] In this way, the linkage method between the range hood and the cooktop in this application can accurately determine whether the user is continuing to prepare ingredients for the next dish or leaving the cooking area to eat after the cooktop is turned off, by marking the activity of people in specific areas of the kitchen. This guides the range hood on whether it should be switched off after the cooktop knob is turned off, or remain in standby mode, waiting for the customer to prepare the ingredients and then turn the cooktop back on, thus avoiding frequent switching of the range hood on and off. It is understood that the "cooking interval" mentioned in this application may, but is not limited to, the user still preparing ingredients after the cooktop is turned off; and the "completion of cooking" mentioned in this application may, but is not limited to, the user finishing cooking and going to eat after the cooktop is turned off.

[0053] It is worth noting that the range hood mentioned in this application can be a range hood with a moving mechanism or a range hood without a moving mechanism. It is understood that the moving mechanism mentioned in this application can be, but is not limited to, a lifting mechanism of the range hood, used to drive the smoke collection chamber of the range hood to rise and fall; or a tilting mechanism of the range hood, used to drive the smoke baffle of the range hood to tilt.

[0054] For example, when the range hood has a moving mechanism, the moving mechanism retracts to the off position when the hood is off, and remains in the on position when the hood is in standby mode. Thus, when the user's cooking is determined to be complete, the range hood switches to the off position, causing the moving mechanism to retract; when the user's cooking is determined to be in a break, only the fan stops running, putting the entire unit in standby mode, and the moving mechanism remains in place, waiting for the customer to prepare the ingredients and relight the hood. This prevents the moving mechanism from repeatedly moving, which helps extend its lifespan.

[0055] Furthermore, the activity status mentioned in this application may include at least the frequency and time span of a user's activities in multiple specific regions.

[0056] More specifically, such as Figure 2 As shown, step S200 in the linkage method between the range hood and the cooktop of this application may include the following steps:

[0057] S210: Within the predetermined time after the stove is turned off, record the number of times the user is present in the cooking area and the food preparation area, as well as the duration of each visit, to obtain an array of stay times in the cooking area and an array of stay times in the food preparation area.

[0058] like Figure 2 As shown, step S200 in the linkage method between the range hood and the cooktop of this application may further include the following step:

[0059] S220: Within the predetermined time after the stove is turned off, record the number of times the user leaves and enters the access area, as well as the time spent each time leaving, to obtain an array of the number of times leaving, the number of times entering, and the time spent leaving.

[0060] For example, such as Figure 3 As shown, step S300 in the linkage method between the range hood and the cooktop of this application may include the following steps:

[0061] S310: In response to the fact that some elements in the food preparation area dwell time array have a time greater than the first preset dwell time threshold, and there is no value in the exit dwell time array or the time of each element in the exit dwell time array is less than the second preset dwell time threshold, the user's cooking state is determined to be a cooking interval, so as to control the range hood to switch to standby state.

[0062] Optionally, such as Figure 3 As shown, step S300 of the linkage method between the range hood and the cooktop in this application further includes the following step:

[0063] S320: In response to the fact that the number of times the user leaves is greater than the number of times the user enters, the time of each element in the food preparation area dwell time array is less than the third preset dwell time threshold, and the time of some elements in the leave dwell time array is greater than the second preset dwell time threshold, the user's cooking status is determined to be cooking completed, and the range hood is controlled to switch to the off state.

[0064] It is worth noting that the frequency of activity mentioned in this application refers to the number of times the user is present in the cooking area, the number of times they are present in the food preparation area, the number of times they leave the entry / exit area, or the number of times they enter the entry / exit area; the time span mentioned in this application refers to the length of time spent in the cooking area each time, the length of time spent in the food preparation area each time, and the length of time spent after leaving the entry / exit area. It is understood that the cooking area mentioned in this application corresponds to the area where the range hood and stove are located in the kitchen; the food preparation area mentioned in this application corresponds to the area where the sink and cutting board are located in the kitchen; and the entry / exit area mentioned in this application corresponds to the area where the door is located in the kitchen.

[0065] In this way, when some elements in the dwell time array of the food preparation area have a time greater than the first preset dwell time threshold, and the dwell time array of the exit area has no value or all elements in the dwell time array of the exit area have a time less than the second preset dwell time threshold, it indicates that although the user has turned off the stove, they are still preparing ingredients for the next dish in the kitchen, and even if they occasionally go in and out, they return immediately. At this time, the linkage method between the range hood and the stove in this application controls the range hood to switch to standby mode, so that although the fan of the range hood stops working, the moving mechanism of the range hood remains in the on position, so that when the stove is turned on again, the fan can be turned on directly to extract the fumes without the moving mechanism having to repeatedly open and close, which helps to extend the service life of the range hood and improve the user experience.

[0066] Furthermore, when the number of times someone leaves the kitchen is greater than the number of times someone enters the kitchen, and the time of each element in the time array for staying in the food preparation area is less than the third preset time threshold, it indicates that after the user turns off the stove, although they stay briefly in the food preparation area, they eventually leave the kitchen to eat. At this time, the linkage method between the range hood and the stove in this application controls the range hood to switch to the off state, so that the fan of the range hood stops working, and the moving mechanism of the range hood returns to the off position, ensuring that the range hood is completely turned off.

[0067] For example, the predetermined time mentioned in this application may be, but is not limited to, a value between 15 minutes and 25 minutes. Preferably, the predetermined time is implemented as twenty minutes, i.e., 20 minutes.

[0068] The first preset dwell time threshold mentioned in this application can be, but is not limited to, a value between 1.5 min and 2.5 min. Preferably, the first preset dwell time threshold is implemented as two minutes, i.e., 2 min.

[0069] The second preset dwell time threshold mentioned in this application can be, but is not limited to, a value between 9 minutes and 11 minutes. Preferably, the second preset dwell time threshold is implemented as ten minutes, i.e., 10 minutes.

[0070] The third preset dwell time threshold mentioned in this application can be, but is not limited to, a value between 0.5 min and 1.5 min. Preferably, the third preset dwell time threshold is implemented as one minute, i.e., 1 min.

[0071] For example, such as Figure 7 and Figure 8 As shown, within twenty minutes after the stove is turned off:

[0072] Record the number of times a user exists in the cooking area La as Na; record the number of times a user exists in the side dish preparation area Lb as Nb; record the number of times a user exits from the entry / exit area Lc as Nc1; and record the number of times a user enters from the entry / exit area Lc as Nc2.

[0073] Record the time a user spends in the cooking area La each time in a one-dimensional array, such as the cooking area stay time array Ta

[10] = {ta0, ta1, ta2, ta3, ta4, ta5, ta6, ta7, ta8, ta9}; record the time a user spends in the side dish area Lb each time in a one-dimensional array, such as the side dish area stay time array Tb

[10] ={tb0, tb1, tb2, tb3, tb4, tb5, tb6, tb7, tb8, tb9}; record the time a user spends outside the kitchen after leaving the entry / exit area Lc each time in a one-dimensional array, such as the exit stay time array Tc

[10] ={tc0, tc1, tc2, tc3, tc4, tc5, tc6, tc7, tc8, tc9}.

[0074] The system then performs logical checks on the above parameters to determine the user's next intention, thereby controlling whether the range hood continues to standby or is completely turned off. Specifically:

[0075] If some elements in array Tb exist for a relatively long time, such as more than two minutes, and array Tc has no values ​​or each element exists for a short time, such as less than ten minutes, then it is determined that although the user turned off the stove, they were still preparing ingredients for the next dish in the kitchen, and even if they occasionally went in and out, they returned immediately. Therefore, the range hood of this application needs to remain in standby mode after the stove is turned off to ensure that the moving mechanism does not return to the off position, so that the fan can be turned on directly to enter the fume extraction mode the next time the stove is turned on.

[0076] If the number of times Nc1 is greater than the number of times Nc2, there is no element with a longer time in array Tb. If it exceeds one minute, there is an element with a longer time in array Tc. If it exceeds ten minutes, it is determined that the user has finished cooking, turned off the stove, and left the kitchen to eat.

[0077] It is worth noting that, in order to prevent the stove from dry burning and completely eliminate safety hazards, such as Figure 1 As shown, the linkage method between the range hood and the cooktop in this application may further include the following steps:

[0078] S400: During the period when the stove is on, simultaneously acquire the time the user stays outside the entry / exit area and the temperature of the stove area, so as to notify the stove to turn off the flame if the time spent outside the entry / exit area is greater than the fourth preset time threshold and the temperature rise coefficient of the stove is greater than the preset temperature rise coefficient threshold or the temperature of the stove area is greater than the preset temperature threshold.

[0079] Optionally, the fourth preset dwell time threshold is between 10 minutes and 15 minutes. Preferably, the fourth preset dwell time threshold is set to ten minutes.

[0080] Optionally, the preset temperature rise coefficient threshold is between 0.9℃ / s and 1.5℃ / s. Preferably, the preset temperature rise coefficient threshold is implemented as 1℃ / s. It is understood that the stove head temperature rise coefficient mentioned in this application refers to the slope of the temperature rise in the stove head area. The larger the value, the faster the temperature rises in the stove head area, which can be used to determine whether there are dangerous scenarios such as dry burning.

[0081] Optionally, the preset temperature threshold is between 150°C and 200°C. Preferably, the preset temperature threshold is set to 160°C.

[0082] In this way, if the system monitors that a user has been away from the kitchen for more than ten minutes while the stove is on, and if the temperature of the stove area rises too rapidly (e.g., the stove temperature rise coefficient exceeds 1℃ / s), or if the stove area temperature exceeds 160℃, it accurately determines a dangerous scenario such as dry burning without human intervention. The range hood then wirelessly notifies the stove to turn off the stove. This avoids false alarms caused by differences in cookware thickness, material, or food, and completely solves safety issues such as dry burning, improving the user experience. It is understood that the stove area temperature mentioned in this application can be obtained by measuring the temperature of the stove area (i.e., the cookware placement area) using an infrared temperature sensor installed on the range hood. When the moisture in the food in the pot has evaporated and cannot be removed by boiling water evaporation, the pot temperature will show a significant short-term rapid rise, meaning the stove temperature rise coefficient will increase briefly, which is used to determine if there is a risk of dry burning.

[0083] According to the above embodiments of this application, in step S100 of the linkage method between the range hood and the stove in this application, the user may manually mark each specific area in advance based on the kitchen layout, or the range hood may automatically detect the user's activities in the kitchen through the sensing module to mark each specific area; the sensing module may be, but is not limited to, a detection device that can sense the user's position, such as millimeter-wave radar, infrared probe and / or camera.

[0084] For example, the linkage method between the range hood and the cooktop in this application can measure user angle and distance information using a 1T2R antenna on the millimeter-wave radar installed in the range hood. It can then mark areas where the user frequently operates near the range hood based on typical cooking actions (such as washing, chopping, or stir-frying), thus identifying the cooking area, food preparation area, and entry / exit area of ​​the kitchen. It is understood that the millimeter-wave radar mentioned in this application can, but is not limited to, be installed on the switch panel assembly of the range hood. It can have frequency bands such as 5.8G, 24G, or 70G to receive intermediate frequency signals and, through time-domain and frequency-domain signal conversion, accurately measure the user's position relative to the millimeter-wave radar within a certain range, including angle and distance.

[0085] Specifically, such as Figure 4 As shown, step S100 in the linkage method between the range hood and the cooktop of this application may include the following steps:

[0086] S110: When the stove is turned on or off, the location of the user is detected and identified as the cooking zone;

[0087] S120: During the period when the stove is on, the user is detected to move multiple times between the cooking area and another location area in order to identify the other location area as the food preparation area;

[0088] S130: The location area where the user enters or exits the kitchen each time is detected and identified as the entry / exit area.

[0089] More specifically, such as Figure 4 As shown, in the linkage method between the range hood and the stove of this application, step S100 may further include the following step after step S120:

[0090] S140: After the stove is turned off, the stove is turned on again after the user has stayed in the other location area for a period of time, in order to verify that the other location area is the food preparation area.

[0091] Optionally, in step S100 of the linkage method between the range hood and the cooktop: the user's location information is detected by a sensing module.

[0092] Optionally, the sensing module is selected from one or more of millimeter-wave radar, infrared detectors, and cameras.

[0093] Optionally, the user's location information includes at least the angle and / or distance of the user's location. It is understood that the angle and / or distance of the user's location can be, but is not limited to, the user coordinates (R, θ) identified by millimeter-wave radar in a polar coordinate system; wherein the polar coordinate system is a coordinate system with the sensing module as the pole, and a ray emanating from the pole is the polar axis.

[0094] For example, such as Figure 7 As shown, with the sensing module or the range hood as the center, the area with a radius less than R1 is marked as the cooking zone La, the area with a radius greater than or equal to R1 and less than or equal to R2 is marked as the food preparation zone Lb, and the area with a radius greater than R2 is marked as the entry / exit zone Lc.

[0095] Or, such as Figure 8 As shown, taking the sensing module or the range hood as the pole, the area with an angle less than θ1 is marked as the food preparation area Lb, the area with an angle greater than or equal to θ1 and less than or equal to θ2 is marked as the cooking area La, and the area with an angle greater than θ2 is marked as the entry / exit area Lc.

[0096] It is worth noting that the identification information for each specific area may include, but is not limited to, the area label, the area angle, and the area distance. For example, the area label for the cooking area is La, the area angle is Aa dataset, and the area distance is Da dataset; the area label for the food preparation area is Lb, the area angle is Ab dataset, and the area distance is Db dataset; the area label for the entrance / exit area is Lc, the area angle is Ac dataset, and the area distance is Dc dataset.

[0097] Furthermore, the multiple moves mentioned in this application can be implemented as two or more times; the period of stay mentioned in this application can be implemented as a stay of more than one minute.

[0098] It is worth mentioning that, according to another aspect of this application, such as Figure 5 As shown, one embodiment of this application further provides a linkage system 10 for a range hood and a cooktop, which may include: an area identification module 11 for identifying multiple specific areas of the kitchen, wherein the multiple specific areas include at least a cooking area, a food preparation area, and an entrance / exit area; a status acquisition module 12 for acquiring the user's activity status in the multiple specific areas within a predetermined time after the cooktop is turned off; and a judgment control module 13 for judging the user's cooking status based on the user's activity status in the multiple specific areas, so as to control the range hood to switch to standby mode when it is judged to be a cooking break, and to control the range hood to switch to the off mode when it is judged to be cooking completed.

[0099] It is worth mentioning that, according to another aspect of this application, such as Figures 6 to 9 As shown, one embodiment of this application further provides a range hood 1, which applies the above-described linkage method between the range hood and the stove.

[0100] Specifically, such as Figures 6 to 9 As shown, the range hood 1 may include: a range hood body 20, including a fan system 21, a smoke collection chamber 22 movably disposed below the fan system 21, and a motion mechanism 23 disposed between the fan system 21 and the smoke collection chamber 22; a sensor assembly 30, including a millimeter-wave radar 31 arranged forward on the range hood body 20 and an infrared temperature probe 32 arranged downward on the range hood body 20; and the aforementioned linkage system 10 between the range hood and the cooktop, which is communicatively connected to the range hood body 20 and the sensor assembly 30, and is used for wireless linkage with the cooktop 2. It is understood that in other examples of this application, the range hood 1 may not include the motion mechanism 23, and this application will not elaborate further on this.

[0101] More specifically, the motion mechanism 23 in the range hood 1 is kept in the on position during cooking breaks to avoid frequent movement of the motion mechanism 23, which helps to extend the service life of the motion mechanism 23 and improve the user experience.

[0102] Optionally, such as Figure 6 and Figure 9As shown, the millimeter-wave radar 31 is located on the front panel of the fan system 21 and is used to monitor the user's activities in the kitchen. It is understood that in other examples of this application, the millimeter-wave radar 31 can be replaced by other radars or visual sensors, as long as the required monitoring task can be achieved; this application will not elaborate further on this.

[0103] Optionally, such as Figure 9 As shown, two infrared temperature probes 32 are arranged at intervals on the bottom wall of the smoke collection chamber 22, corresponding to the two burner areas of the stove 2, so that the two burner areas fall within the field of view of the two infrared temperature probes 32 respectively. It is understood that in other examples of this application, the infrared temperature probes 32 can be replaced by other temperature sensors, as long as the required temperature detection task can be achieved, and this application will not elaborate on this further.

[0104] It is worth noting that the motion mechanism 23 mentioned in this application can be implemented as a lifting mechanism, so that the range hood 1 is implemented as a lifting range hood. It is understood that the motion mechanism 23 mentioned in this application can also be implemented as a flipping mechanism to flip the smoke baffle as needed, which will not be described in detail here.

[0105] It should be noted that the range hood of this application can simultaneously incorporate an AI model. User operation data on the range hood and stove linkage system can be fed into the AI ​​model. Through repeated iterations, the range hood will become familiar with the customer's operating habits, thereby better understanding the customer's intentions and making things more convenient for the customer.

[0106] Furthermore, the range hood of this application can also be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the range hood to perform corresponding operations, thereby realizing the intelligent control of the range hood and improving the user experience.

[0107] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0108] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are quite specific and detailed. However, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A method for linking a range hood and a cooktop, characterized in that, Including the following steps: The kitchen is identified by identifying several specific areas, including at least a cooking area, a food preparation area, and an access area. Within a predetermined time after the stove is turned off, the user's activity status in the multiple specific areas is acquired, wherein the activity status includes at least the frequency and time span of the user's activities in the multiple specific areas; as well as Based on the user's activity status in the multiple specific areas, the user's cooking status is determined, and when it is determined to be a cooking break, the range hood is controlled to switch to standby mode. When cooking is deemed complete, the range hood is switched to the off state.

2. The method for linking a range hood and a cooktop according to claim 1, characterized in that, The step of acquiring the user's activity status in the multiple specific areas within a predetermined time after the stove is turned off includes the following steps: Within the predetermined time after the stove is turned off, record the number of times the user is present in the cooking area and the food preparation area, as well as the duration of each visit, to obtain arrays of time spent in the cooking area and food preparation area; and / or Within the predetermined time after the stove is turned off, record the number of times the user leaves and enters the designated area, as well as the duration of each exit, to obtain an array of exit count, entry count, and exit duration.

3. The method for linking a range hood and a cooktop according to claim 2, characterized in that, The step of determining the user's cooking status based on the user's activity status in the multiple specific areas includes the following steps: In response to the fact that some elements in the food preparation area dwell time array have a time greater than the first preset dwell time threshold, and the exit dwell time array has no value or all elements in the exit dwell time array have a time less than the second preset dwell time threshold, the user's cooking state is determined to be a cooking break, and the range hood is controlled to switch to standby state.

4. The method for linking a range hood and a cooktop according to claim 3, characterized in that, The first preset dwell time threshold is between 1.5 min and 2.5 min; the second preset dwell time threshold is between 9 min and 11 min.

5. The method for linking a range hood and a cooktop according to claim 2, characterized in that, The step of determining the user's cooking status based on the user's activity status in the multiple specific areas includes the following steps: In response to the fact that the number of times the user leaves is greater than the number of times the user enters, the time of each element in the food preparation area dwell time array is less than the third preset dwell time threshold, and the time of some elements in the leave dwell time array is greater than the second preset dwell time threshold, the user's cooking status is determined to be cooking completed, and the range hood is controlled to switch to the off state.

6. The method for linking a range hood and a cooktop according to claim 5, characterized in that, The second preset dwell time threshold is between 9 min and 11 min; the third preset dwell time threshold is between 0.5 min and 1.5 min.

7. The method for linking a range hood and a cooktop according to any one of claims 1 to 6, characterized in that, The predetermined time is between 15 minutes and 25 minutes.

8. The method for linking a range hood and a cooktop according to any one of claims 1 to 6, characterized in that, The method for linking the range hood and the cooktop also includes the following steps: During the period when the stove is on, the time the user stays outside the entry / exit area and the temperature of the stove area are simultaneously acquired. If the time spent outside the entry / exit area exceeds a fourth preset time threshold and the temperature rise coefficient of the stove exceeds a preset temperature rise coefficient threshold or the temperature of the stove area exceeds a preset temperature threshold, the stove is notified to turn off.

9. The method for linking a range hood and a cooktop according to claim 8, characterized in that, The fourth preset dwell time threshold is between 10 min and 15 min; the preset temperature rise coefficient threshold is between 0.9 ℃ / s and 1.5 ℃ / s; and the preset temperature threshold is between 150 ℃ and 200 ℃.

10. The method for linking a range hood and a cooktop according to any one of claims 1 to 6, characterized in that, The step of identifying multiple specific areas of the kitchen includes the following steps: When the stove is turned on or off, the location of the user is detected and identified as the cooking zone; During the period when the stove is on, the user is detected to move between the cooking area and another location area multiple times in order to identify the other location area as the food preparation area; as well as The location area where a user enters or exits the kitchen each time is detected and identified as that entry / exit area.

11. The method for linking a range hood and a cooktop according to claim 10, characterized in that, The step of identifying multiple specific areas of the kitchen further includes the step of: After the stove is turned off, the system detects that the user has stayed in that other location area for a period of time before turning the stove back on to verify that the other location area is the food preparation area.

12. The method for linking a range hood and a cooktop according to claim 1, characterized in that, In the step of identifying multiple specific areas of the kitchen: the user's location information is detected by a sensing module.

13. The method for linking a range hood and a cooktop according to claim 12, characterized in that, The user's location information includes at least the angle and / or distance of the user's location.

14. The method for linking a range hood and a cooktop according to claim 12, characterized in that, Using the sensing module or the range hood as the center, the area with a radius less than R1 is marked as the cooking area, the area with a radius greater than or equal to R1 and less than or equal to R2 is marked as the food preparation area, and the area with a radius greater than R2 is marked as the entry / exit area.

15. The method for linking a range hood and a cooktop according to claim 12, characterized in that, The sensing module is selected from one or more of millimeter-wave radar, infrared detectors, and cameras.

16. A linkage system between a range hood and a cooktop, characterized in that, Including those that are communicatively connected: The area identification module is used to identify multiple specific areas of the kitchen, wherein the multiple specific areas include at least a cooking area, a food preparation area, and an entrance / exit area; The status acquisition module is used to acquire the user's activity status in the multiple specific areas within a predetermined time after the stove is turned off, wherein the activity status includes at least the frequency and time span of the user's activities in the multiple specific areas; as well as The judgment and control module is used to determine the user's cooking status based on the user's activity status in the multiple specific areas, so as to control the range hood to switch to standby mode when it is determined to be a cooking break; When cooking is deemed complete, the range hood is switched to the off state.

17. A range hood, characterized in that, The range hood uses the linkage method between the range hood and the stove as described in any one of claims 1 to 15.

18. The range hood according to claim 17, characterized in that, The moving mechanism in the range hood remains in the on position during cooking breaks.

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