Cleaning reminder method, apparatus, and extractor hood

Abstract

The application belongs to the field of intelligent household appliances, and particularly relates to a cleaning prompting method, device, equipment and range hood. When the range hood is in a working state, the oil fume concentration value of the environment where the range hood is located is collected according to a preset frequency, the instantaneous oil fume amount is calculated based on the collected multiple oil fume concentration values and the effective air suction volume of the range hood, multiple instantaneous oil fume amounts are accumulated to determine the oil fume content corresponding to the range hood, when the oil fume content reaches a preset content threshold value, an oil cup cleaning prompt is generated to prompt a user to clean the oil cup of the range hood, and when the number of times of generating the oil cup cleaning prompt reaches a first preset number threshold value, an impeller cleaning prompt is generated to prompt the user to clean the impeller of the range hood. The method can accurately quantify the oil fume accumulation amount and trigger cleaning prompts in stages, can ensure that the oil cup is cleaned in time, can intelligently predict the dirt degree of the impeller, can effectively improve the use convenience and smoke exhaust effect of the range hood, and can prolong the service life of the whole machine.

Description

Technical Field

[0001] This application relates to the field of smart home appliances, and more particularly to a cleaning reminder method, device, equipment, and range hood. Background Technology

[0002] As an indispensable core device in modern kitchens, range hoods work by creating a negative pressure zone through the high-speed rotation of an internal impeller. This effectively draws in cooking fumes and exhausts them outdoors through ducts, ensuring kitchen air quality and the health of users. However, over long-term use, grease and particulate matter from the fumes gradually adhere to the impeller surface and the inner wall of the grease box, forming grease buildup. This not only disrupts the impeller's dynamic balance, leading to increased vibration and noise during operation, but may also reduce fan efficiency, affecting fume extraction performance and even shortening the overall lifespan of the machine.

[0003] In existing technologies, the grease cleaning reminder function of range hoods mainly relies on simple timer mechanisms or manual observation. For example, the system automatically issues a cleaning reminder based on a preset time period (such as every three months), or the user can visually determine whether cleaning is needed by looking at the oil level markings on the oil box.

[0004] However, due to significant differences in cooking frequency, dish type, heat level, and oil usage among different families, reminder mechanisms based on fixed cycles are difficult to match the actual rate of oil accumulation. Users cannot obtain accurate maintenance advice based on their own cooking habits, which can easily lead to problems such as untimely cleaning or over-maintenance. Summary of the Invention

[0005] This application provides cleaning reminder methods, devices, equipment, and range hoods to solve the problems of untimely cleaning or excessive maintenance.

[0006] In a first aspect, embodiments of this application provide a cleaning reminder method, including:

[0007] When the range hood is in operation, the concentration of oil fumes in the environment where the range hood is located is collected at a preset frequency.

[0008] The instantaneous amount of oil fume is calculated based on the collected multiple oil fume concentration values ​​and the effective air intake volume of the range hood. The multiple instantaneous oil fume values ​​are accumulated to determine the oil fume content corresponding to the range hood.

[0009] When the oil fume content reaches a preset threshold, an oil cup cleaning prompt is generated to remind the user to clean the oil cup of the range hood. When the number of times the oil cup cleaning prompt is generated reaches a first preset number threshold, an impeller cleaning prompt is generated to remind the user to clean the impeller of the range hood. The preset content threshold is the ratio of the safe oil stain capacity of the oil cup to the oil fume condensation rate. The first preset number threshold is determined based on the impeller oil stain accumulation amount and the impeller safe oil stain threshold corresponding to each oil cup cleaning.

[0010] As an optional implementation, after generating an oil cup cleaning prompt when the oil fume content reaches a preset threshold, the method further includes:

[0011] The oil fume content is reset to zero.

[0012] As an optional implementation, after generating an oil cup cleaning prompt when the oil fume content reaches a preset threshold to remind the user to clean the oil cup of the range hood, the method further includes:

[0013] Receive feedback instructions regarding the oil cup cleaning prompt;

[0014] When the feedback instruction prompts the user to clean the oil cup, the number of times the oil cup cleaning prompt is generated will be incremented by one.

[0015] As an optional implementation, after generating the impeller cleaning prompt when the number of times the oil cup cleaning prompt is generated reaches a first preset threshold, the method further includes:

[0016] Reset the number of times the oil cup cleaning prompt has been generated to zero.

[0017] As an optional implementation, after receiving the feedback instruction for the oil cup cleaning prompt, the method further includes:

[0018] When the feedback instruction tells the user not to clean the oil cup, the number of times the user has ignored the oil cup cleaning prompt is incremented by one;

[0019] When the number of times the user ignores the oil cup cleaning prompt reaches a second preset threshold, the range hood will stop removing oil fumes and the oil cup cleaning prompt will be displayed.

[0020] As an optional implementation, the step of incrementing the number of times the oil cup cleaning prompt is generated when the feedback instruction instructs the user to clean the oil cup includes:

[0021] When the feedback command instructs the user to clean the oil cup, the liquid level information inside the oil cup is obtained;

[0022] When the liquid level information indicates that the amount of oil in the oil cup is less than a preset oil level threshold, the number of times the oil cup cleaning prompt is generated will be incremented by one.

[0023] Secondly, embodiments of this application provide a cleaning reminder device, comprising:

[0024] The data acquisition module is used to collect the oil fume concentration value of the environment where the range hood is located at a preset frequency when the range hood is in working state.

[0025] The determination module is used to calculate the instantaneous amount of oil fume based on the collected multiple oil fume concentration values ​​and the effective air intake volume of the range hood, and to accumulate the multiple instantaneous oil fume amounts to determine the oil fume content corresponding to the range hood;

[0026] The prompt module is used to generate an oil cup cleaning prompt when the oil fume content reaches a preset content threshold, so as to prompt the user to clean the oil cup of the range hood, and to generate an impeller cleaning prompt when the number of times the oil cup cleaning prompt is generated reaches a first preset number threshold, so as to prompt the user to clean the impeller of the range hood. The preset content threshold is the ratio of the safe oil stain capacity of the oil cup to the oil fume condensation rate, and the first preset number threshold is determined based on the impeller oil stain accumulation amount and the impeller safe oil stain threshold corresponding to each oil cup cleaning.

[0027] As an optional implementation, the cleaning reminder device further includes: a processing module;

[0028] The processing module is used to reset the oil fume content to zero.

[0029] As an optional implementation, the cleaning reminder device further includes: a receiving module and a generating module;

[0030] The receiving module is used to receive feedback instructions for the oil cup cleaning prompt;

[0031] The generation module is used to increment the number of times the oil cup cleaning prompt is generated when the feedback instruction instructs the user to clean the oil cup.

[0032] As an optional implementation, the generation module is also used to reset the number of times the oil cup cleaning prompt has been generated to zero.

[0033] As an optional implementation, the cleaning reminder device further includes: a control module;

[0034] The processing module is also used to increment the number of times the user has ignored the oil cup cleaning prompt when the feedback instruction instructs the user not to clean the oil cup;

[0035] The control module is used to control the range hood to stop removing oil fumes and display the oil cup cleaning prompt when the number of times the user ignores the oil cup cleaning prompt reaches a second preset threshold.

[0036] As an optional implementation, the cleaning reminder device further includes: an acquisition module;

[0037] The acquisition module is used to acquire the liquid level information in the oil cup when the feedback instruction instructs the user to clean the oil cup;

[0038] The generation module is also used to increment the number of times the oil cup cleaning prompt is generated when the liquid level information indicates that the amount of oil in the oil cup is less than a preset oil level threshold.

[0039] Thirdly, this application provides a range hood, including a range hood body, a controller, an oil cup, an impeller, a concentration sensor, and a display disposed on the range hood body;

[0040] The controller is connected to the concentration sensing device and the display;

[0041] The concentration sensing device is used to collect the concentration value of oil fumes in the environment where the range hood is located;

[0042] The controller is used to generate oil cup cleaning prompts and / or impeller cleaning prompts based on the oil fume concentration value, using the first aspect and / or various possible cleaning prompt methods described above, and to display them through the display.

[0043] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0044] The cleaning reminder method provided in this application accurately monitors the oil fume accumulation in the range hood by collecting oil fume concentration in real time, combining it with the suction volume to precisely quantify the instantaneous oil fume volume, and accumulating it to obtain the total oil fume content. Compared with traditional timed or manual judgment methods, it can avoid false or missed reminders. Based on the total oil fume content, it triggers oil cup cleaning reminders and impeller cleaning reminders in stages, which can remind users to clean the oil cup in time when it is about to overflow. At the same time, it can intelligently predict the degree of dirtiness of the impeller based on the accumulated oil fume volume and issue cleaning reminders in advance. This not only ensures that the smoke extraction effect is always in good condition, but also reduces the risk of equipment wear and failure due to excessive oil accumulation, improves the ease of use, intelligence level and operational reliability of the range hood, and effectively extends the service life of the entire machine. Attached Figure Description

[0045] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0046] Figure 1 Flowchart of the cleaning reminder method provided in this application Figure 1 ;

[0047] Figure 2 Flowchart of the cleaning reminder method provided in this application Figure 2 ;

[0048] Figure 3 A schematic diagram of the cleaning reminder device provided in this application;

[0049] Figure 4 This is a structural schematic diagram of a range hood provided in this application.

[0050] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] As a crucial piece of equipment in modern kitchens, range hoods use an internal motor to drive an impeller at high speed, creating a negative pressure zone near the air inlet. This effectively captures and removes cooking fumes, which are then exhausted outdoors through the exhaust duct, improving kitchen air quality and protecting the respiratory health of users. However, during long-term operation, grease particles and impurities from the fumes continuously accumulate on the impeller blades, the inner walls of the duct, and the surface of the grease collection box, forming stubborn grease buildup. This accumulation not only increases the weight of the equipment and disrupts the impeller's dynamic balance, leading to increased vibration and noise during operation, but also obstructs airflow, reduces the fan's exhaust efficiency, weakens the fume extraction effect, and in severe cases, may even cause motor overload, affecting the overall lifespan of the machine.

[0053] Currently, most range hoods' grease cleaning reminder functions rely on preset timer reminders or simple methods such as visually checking the grease level in the grease tray. For example, the system may automatically issue a cleaning reminder every three months, or the user may determine whether cleaning is needed by checking the markings on the grease tray.

[0054] Because families differ in cooking frequency, culinary preferences, heat intensity, and oil usage, the amount of cooking fumes produced varies greatly. Therefore, reminder mechanisms based on fixed cycles or cursory observation are ill-suited to individual usage scenarios, easily leading to cleaning reminders that are too early or too late. Users may frequently disassemble and clean the equipment before it becomes heavily soiled, creating unnecessary maintenance burdens; or they may neglect cleaning for extended periods due to delayed reminders, resulting in decreased equipment performance and increased energy consumption.

[0055] To address the aforementioned issues, the cleaning reminder method provided in this application collects the ambient oil fume concentration at a preset frequency while the range hood is operating. It then calculates the instantaneous oil fume volume based on the effective suction volume and accumulates it to obtain the total oil fume content. When the total oil fume content reaches a threshold, an oil cup cleaning reminder is triggered. When the number of oil cup reminders reaches a set threshold, an impeller cleaning reminder is further triggered. By accurately quantifying the accumulated oil fume volume, a tiered cleaning reminder is achieved, ensuring timely cleaning of the oil cup and intelligently predicting the degree of impeller dirtiness. This improves the ease of use and smoke extraction effect of the range hood, and extends the overall service life of the machine.

[0056] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0057] Figure 1 Flowchart of the cleaning reminder method provided in this application Figure 1 In this embodiment, the executing entity is, for example, a controller. Figure 1 As shown, the method includes:

[0058] S101: When the range hood is in operation, collect the oil fume concentration value of the environment where the range hood is located at a preset frequency.

[0059] When the range hood is in operation, the system activates a fume concentration collection mechanism, periodically acquiring the fume concentration value in the kitchen environment at pre-set fixed time intervals (i.e., preset frequency). Through a built-in collection module (such as a fume sensor), the system maintains a stable and regular collection time throughout the entire operating cycle of the range hood, ensuring accurate acquisition of fume concentration data at every point in time.

[0060] The preset frequency setting needs to be combined with actual usage needs. For example, the preset frequency can be set to once every 5 seconds or 10 seconds, depending on factors such as the size of the kitchen space and the amount of common cooking fumes generated. During the operation of the range hood, regardless of the current fume concentration, the sampling action will be continuously executed at the predetermined frequency. It will not pause due to low fume concentration, nor will it arbitrarily increase the frequency due to high concentration. This ensures that the collected fume concentration value can objectively reflect the changes in environmental fumes at different cooking stages (such as heating oil in a wok, stir-frying, stewing).

[0061] S102: Calculate the instantaneous oil fume volume based on the collected multiple oil fume concentration values ​​and the effective air intake volume of the range hood, and accumulate multiple instantaneous oil fume volumes to determine the oil fume content corresponding to the range hood.

[0062] The effective suction volume of a range hood refers to the actual effective air volume that the range hood can stably draw away and expel cooking fumes per unit time.

[0063] Specifically, the collected oil fume concentration values ​​are first processed by removing outliers caused by sensor interference, and then the effective data are integrated using statistical methods such as average value and weighted average. In cases where the oil fume concentration fluctuates greatly, data from peak cooking periods are given higher weight based on the collection time, so that the processed concentration values ​​can truly reflect the actual oil fume generation patterns.

[0064] Based on the processed oil fume concentration value, the instantaneous oil fume volume is calculated in combination with the effective suction volume of the range hood. Then, the instantaneous oil fume volumes at multiple times are accumulated to finally obtain the oil fume content corresponding to the range hood in a specific working cycle. This realizes the transformation from abstract concentration values ​​to quantifiable total oil fume volume, accurately reflecting the oil fume accumulation in the range hood's processing or environment.

[0065] S103: When the oil fume content reaches a preset content threshold, an oil cup cleaning prompt is generated to remind the user to clean the oil cup of the range hood. When the number of times the oil cup cleaning prompt is generated reaches a first preset number threshold, an impeller cleaning prompt is generated to remind the user to clean the impeller of the range hood. The preset content threshold is the ratio of the safe oil stain capacity of the oil cup to the oil fume condensation rate. The first preset number threshold is determined based on the impeller oil stain accumulation amount corresponding to each oil cup cleaning and the impeller safe oil stain threshold.

[0066] The safe oil capacity of the oil cup is the maximum safe volume or mass of oil that the oil cup can hold.

[0067] The oil fume condensation rate is the proportion of oil fumes that are converted from gaseous oil fumes into liquid oil stains and collected when they pass through the internal condensation structure of the range hood.

[0068] The accumulated oil stains on the impeller are the total mass or thickness of oil stains formed by the oil fumes adhering to and depositing on the impeller surface during the operation of the range hood.

[0069] The impeller safety oil contamination threshold is the maximum allowable oil contamination value on the impeller to ensure impeller dynamic balance, operating noise, and safe and stable operation.

[0070] Specifically, when the system determines that the oil fume content of the range hood has reached a preset threshold, it will automatically trigger the oil cup cleaning reminder mechanism. The preset threshold accurately reflects the degree of oil accumulation in the oil cup. When the oil fume content reaches this threshold, it means that a significant amount of oil has been collected in the oil cup. If it is not cleaned in time, it may affect the oil fume adsorption effect and even pose a risk of oil overflow. At this time, the generated oil cup cleaning reminder will be delivered to the user in a visual manner (such as a pop-up window on the device display screen, a mobile APP notification, etc.), clearly informing the user that the oil cup needs to be cleaned to ensure that the range hood maintains its normal oil fume processing capacity.

[0071] Meanwhile, the system will track the number of times oil cup cleaning prompts are generated in real time. When the number of oil cup cleaning prompts reaches a first preset threshold, an impeller cleaning prompt will be generated. This is because during the repeated accumulation of oil in the oil cup, some fine oil fume particles may break through the filter and adhere to the impeller. As the number of oil cup cleanings increases, oil on the impeller will gradually accumulate. Long-term neglect of cleaning will lead to a decrease in impeller speed and a reduction in oil fume exhaust volume, affecting the overall performance of the equipment.

[0072] For example, taking a range hood with a 300ml oil cup capacity and a 60% condensation efficiency as an example, to prevent oil spillage, the safe capacity of the oil cup is set to 240ml (leaving 20% ​​space). Using the formula "Oil fume content = oil volume ÷ condensation efficiency," 240ml of oil corresponds to a total oil fume volume of 400ml. Therefore, the "cumulative oil fume concentration corresponding to 400ml" is the preset content threshold. When the system detects that the cumulative oil fume content of the range hood reaches 400ml during its working cycle, it indicates that 240ml of oil has been collected in the oil cup, approaching the safe upper limit. At this point, an oil cup cleaning prompt is triggered. The preset content threshold transforms the vague need for oil cup cleaning into a precise numerical judgment, ensuring that the prompt timing is neither too early (avoiding frequent cleaning) nor too late (preventing oil spillage).

[0073] Each time the oil cup accumulates to a preset threshold (corresponding to 240 μL of oil), some fine oil fumes will adhere to the impeller, forming approximately 5g of oil residue. At this point, the impeller's performance is not affected. However, when the oil residue on the impeller accumulates to 30g, it will cause a 10% decrease in rotational speed and a reduction in airflow, requiring timely cleaning. Since each oil cup cleaning prompt corresponds to an increase of 5g of oil residue on the impeller, it takes 6 oil cup cleaning prompts for the oil residue on the impeller to reach 30g. The first preset threshold is 6 times.

[0074] The cleaning reminder method provided in this application involves collecting the oil fume concentration value of the environment where the range hood is located at a preset frequency when the range hood is in operation. Based on the collected multiple oil fume concentration values ​​and the effective suction volume of the range hood, the instantaneous oil fume volume is calculated. Multiple instantaneous oil fume volumes are accumulated to determine the corresponding oil fume content of the range hood. When the oil fume content reaches a preset content threshold, an oil cup cleaning reminder is generated to prompt the user to clean the oil cup of the range hood. When the number of times the oil cup cleaning reminder is generated reaches a first preset number threshold, an impeller cleaning reminder is generated to prompt the user to clean the impeller of the range hood. This method can accurately quantify the accumulated oil fume and trigger cleaning reminders in stages, ensuring timely cleaning of the oil cup and intelligently predicting the degree of dirt on the impeller, effectively improving the ease of use and smoke extraction effect of the range hood, and extending the service life of the entire machine.

[0075] Figure 2 Flowchart of the cleaning reminder method provided in this application Figure 2 ,like Figure 2 As shown, in this embodiment... Figure 1 Based on the embodiments, the cleaning reminder method is described in detail, which includes:

[0076] S201: When the range hood is in operation, collect the oil fume concentration value of the environment where the range hood is located at a preset frequency.

[0077] Assuming a user turns on their home range hood to cook, the hood will detect cooking fumes as soon as it starts operating, with a preset frequency of collecting fume concentration data every 8 seconds. In the initial stage when the user turns on the stove and pours in oil, there is relatively little fume, and concentrations of 12 mg / m³ and 18 mg / m³ are collected at the 8th and 16th seconds, respectively. When food is added and stir-frying begins, the amount of fume increases dramatically, with high concentrations of 85 mg / m³, 92 mg / m³, and 88 mg / m³ collected at the 24th, 32nd, and 40th seconds, respectively. After the food is cooked and the stove is turned off, the fume gradually decreases, but the frequency continues at 8 seconds, with values ​​of 45 mg / m³ and 20 mg / m³ collected at the 48th and 56th seconds, respectively. Data collection stops only when the user turns off the range hood, following the preset 8-second interval pattern throughout the entire process.

[0078] S202: Calculate the instantaneous oil fume volume based on the collected multiple oil fume concentration values ​​and the effective air intake volume of the range hood, and accumulate multiple instantaneous oil fume volumes to determine the oil fume content corresponding to the range hood.

[0079] For example, a range hood collects seven sets of oil fume concentration values ​​at 8-second intervals (12 mg / m³ at second 8, 18 mg / m³ at second 16, 85 mg / m³ at second 24, 92 mg / m³ at second 32, 88 mg / m³ at second 40, 45 mg / m³ at second 48, and 20 mg / m³ at second 56). Then, combining this with the effective air intake volume of the range hood (assuming it can draw in 1.2 m³ of oil-containing air every 8 seconds), the instantaneous oil fume volume corresponding to each concentration is calculated: for example, the instantaneous oil fume volume at second 8 is 1... 2mg / m³ × 1.2m³ = 14.4mg. At the 16th second, it is 18mg / m³ × 1.2m³ = 21.6mg. From the 24th to the 56th second, the values ​​are calculated as 102mg, 110.4mg, 105.6mg, 54mg, and 24mg respectively. Then, the seven instantaneous oil fume amounts are added together, i.e., 14.4 + 21.6 + 102 + 110.4 + 105.6 + 54 + 24 = 432mg. Finally, the oil fume content corresponding to this range hood's working cycle is determined to be 432mg.

[0080] S203: When the oil fume content reaches the preset threshold, an oil cup cleaning prompt is generated.

[0081] For example, if the preset oil fume threshold for a range hood is set to 400mg, then when the calculated oil fume content for this cooking session reaches 432mg, exceeding this threshold, the system will automatically generate an oil cup cleaning reminder. This threshold is directly related to the actual capacity of the oil cup—assuming the range hood's oil cup can hold a safe amount of oil (leaving some space to prevent overflow), and the oil fume condensation rate is approximately 60% (meaning about 60% of the total oil fume will condense into liquid oil and flow into the oil cup), the preset threshold can be calculated as "preset threshold = safe oil content ÷ condensation rate": 240mg ÷ 60% = 400mg, thus the preset threshold is 400mg. When the oil fume content reaches 432mg, it means that approximately 259mg of oil (432mg × 60%) has accumulated in the oil cup, exceeding the safe capacity limit. At this point, the generated reminder accurately reminds the user to clean the cup, preventing oil overflow and contamination of the machine or the kitchen environment.

[0082] The indicator light on the range hood's control panel will light up and display the message "Oil cup is full, please empty it promptly"; some smart models will also push reminders to the associated mobile app, so users can receive notifications even when they are not in the kitchen.

[0083] S204: Zero out the amount of oil fumes.

[0084] For example, once the oil cup cleaning prompt is generated, it will persist until the user manually confirms the cleaning operation. That is, after the user removes the oil cup, empties the oil, and puts it back in its original position, the system will reset the cumulative oil fume content value (from 432mg to zero).

[0085] S205: Receive feedback instructions for oil cup cleaning prompts.

[0086] When the range hood generates a prompt to clean the grease cup (e.g., the panel lights up or text is displayed), the system enters a feedback command receiving state, waiting for the user to provide feedback through a preset interaction method. Feedback command reception can be local operation feedback; after cleaning the grease cup, the user can directly operate on the range hood's control panel, such as pressing the "Confirm Cleaning" physical button or touching the "Cleaned" icon on the screen. The panel's command receiver will then capture the user's operation signal in real time and convert it into a feedback command that the system can recognize. Feedback command reception can also be remote operation feedback; if the range hood supports smart networking, the user can view the cleaning prompt through a linked mobile app. After cleaning, clicking the "Confirm Cleaning" button in the app will transmit the feedback command to the range hood via the network, completing remote command reception.

[0087] Optionally, after receiving feedback instructions regarding the oil cup cleaning prompt, the following may also be included:

[0088] When a feedback instruction tells the user not to clean the oil cup, increment the number of times the user has ignored the oil cup cleaning prompt by one.

[0089] When the number of times the user ignores the oil cup cleaning prompt reaches the second preset threshold, the range hood will stop removing oil fumes and display the oil cup cleaning prompt.

[0090] When the system receives a user's feedback instruction regarding the oil cup cleaning prompt, and the instruction explicitly indicates that the oil cup should not be cleaned (for example, the user presses the "Clean Later" button on the control panel, or selects the "Do Not Process" option in the app), the system will automatically trigger a counting mechanism to increment the "number of times the user ignored the oil cup cleaning prompt" by 1. This count is kept separate from the number of times the oil cup is cleaned, and is used to track the user's procrastination behavior regarding the cleaning prompt.

[0091] For example, if a user chooses "do not clean" after receiving the oil cup cleaning prompt for the first time, the number of times the prompt is ignored changes from 0 to 1. If the system triggers the prompt again after the next boot and the user still chooses not to clean, the number of times the prompt is ignored increases to 2, and so on, to ensure that every instance of ignoring the prompt is accurately recorded.

[0092] When the number of times a user ignores the grease cup cleaning reminder reaches a second preset threshold (e.g., set to 3 times), the system will activate a forced intervention mechanism: First, the range hood will stop its fume removal function (e.g., turn off the fan and stop suction), retaining only basic power supply. Simultaneously, the control panel will continuously display the grease cup cleaning reminder, such as a high-frequency flashing red warning light and a repeated message on the screen saying "The grease cup has expired and has not been cleaned; please handle it immediately." Some models will also be accompanied by a buzzer. In other words, when a user repeatedly ignores the cleaning reminder, the grease cup may have exceeded its safe capacity. Continued use could lead to grease overflow, motor overload, and other risks. Therefore, the forced shutdown compels the user to clean the cup, ensuring safe operation of the equipment while preventing the spread of grease and pollution of the kitchen environment. Only after the user completes the grease cup cleaning and provides a "cleaned" notification will the system reset the ignore count to 0 and restore the range hood to normal operation.

[0093] S206: When a feedback instruction instructs the user to clean the oil cup, increment the number of times an oil cup cleaning prompt is generated.

[0094] When a user issues a "clean the grease cup" command in response to the grease cup cleaning prompt (e.g., pressing the "cleaned" button on the range hood panel or confirming "cleaning complete" in the associated app), the system responds to this valid action, incrementing the number of grease cup cleaning prompts by 1. By quantifying the actual number of times users respond to grease cup cleaning prompts, the system tracks the accumulation cycle of grease inside the range hood. For example, if a user completes cleaning after receiving the prompt for the first time, the number of grease cup cleaning prompts increases from 0 to 1; if the prompt is triggered again and cleaning is completed after a period of use, the number of grease cup cleaning prompts increases to 2, and so on, forming a record of the grease cup cleaning frequency.

[0095] Each time a user confirms cleaning the oil cup, the system increments the number of cleaning prompts by 1 and simultaneously resets the current accumulated oil fume content to zero (e.g., from 432mg to 0). For example, in a stir-fry scenario, when an oil fume content of 432mg triggers a prompt, the number of oil cup cleaning prompts becomes 1 after the user cleans the cup, and the accumulated oil fume value is reset to zero. The oil fume generated during the next cooking session will start accumulating again until it reaches the preset threshold again, triggering a new prompt.

[0096] Optionally, when a feedback instruction instructs the user to clean the oil cup, the number of times an oil cup cleaning prompt is generated is incremented by one, including:

[0097] When a feedback command instructs the user to clean the oil cup, the liquid level information inside the oil cup is obtained;

[0098] When the level information indicates that the oil level in the oil cup is less than the preset oil level threshold, the number of times an oil cup cleaning prompt is generated will be incremented by one.

[0099] When a user issues a "clean the oil cup" command via the control panel or app, the range hood's automatic sensing module activates to obtain the liquid level information inside the oil cup, enabling real-time detection of the remaining oil. For example, after the oil cup is installed correctly, the weight sensor detects the current total weight of the oil cup (including residual oil) and compares it with the "base weight of an empty oil cup" to calculate the weight of the residual oil. Based on this, the user determines the oil level height and converts it into intuitive liquid level data.

[0100] After acquiring the liquid level information (i.e., the weight of residual oil), the system compares it with the preset oil level threshold. Combined with the set safe oil level of 240mg for the oil cup, the preset oil level threshold is typically set to 5% of the safe oil level (i.e., 12mg), representing the "acceptable residual standard" after cleaning the oil cup. If the automatically sensed residual oil (e.g., 10mg as mentioned above) is less than 12mg, it indicates that the oil cup has met the cleaning requirements, and the system will increment the number of oil cup cleaning prompts (e.g., update from 1 to 2), while simultaneously resetting the cumulative oil fume content from 432mg to zero. If the sensed residual oil (e.g., 250mg) is higher than 12mg, it is determined that the cleaning is incomplete. The system will not increase the number of prompts; instead, it will display "Too much oil residue in the oil cup, please clean again" on the panel and maintain the original prompt status until the system automatically senses that the residual oil is below 12mg, at which point the count will be updated.

[0101] S207: When the number of times an oil cup cleaning prompt is generated reaches the first preset threshold, an impeller cleaning prompt is generated.

[0102] The impeller cleaning reminder is generated differently from the grease cup cleaning reminder. The range hood's control panel will illuminate an indicator light and display the message, "The impeller has accumulated grease; please clean it promptly." If it supports smart connectivity, it will also push a reminder to the mobile app containing an "Impeller Cleaning Step-by-Step Guide" to help users master the correct operating method. Unlike the grease cup cleaning reminder, the impeller cleaning reminder will not immediately force a shutdown, but will be repeated every time the hood is turned on until the user reports "cleaned."

[0103] S208: Reset the number of times oil cup cleaning prompts have been generated to zero.

[0104] When the number of times an oil cup cleaning prompt is generated reaches a first preset threshold (e.g., 6 times), the system will reset the number of oil cup cleaning prompts to 0 after successfully generating an impeller cleaning prompt. This is because after the impeller is cleaned, the oil accumulation inside the device returns to a new starting point. If the original count of 6 is retained, it will cause a mismatch between the subsequent oil cup cleaning counts and the oil accumulation status of the impeller (e.g., the impeller has been cleaned, but the old count is still used to judge the oil status of the new cycle). For example, if a user receives an impeller cleaning prompt after the 6th oil cup cleaning, completes the impeller cleaning, and provides feedback, the system will reset the oil cup cleaning prompt count from 6 to 0. This means that the next oil cup cleaning count will start accumulating from 1 again, ensuring that the triggering of each round of impeller cleaning prompts is based on the accurate statistics of the number of oil cup cleanings in the new cycle, avoiding interference from historical counts in the judgment of the new cycle.

[0105] The cleaning reminder method provided in this application involves collecting the oil fume concentration value of the environment where the range hood is located at a preset frequency when the range hood is in operation. Based on the collected multiple oil fume concentration values ​​and the effective suction volume of the range hood, the instantaneous oil fume volume is calculated. Multiple instantaneous oil fume volumes are accumulated to determine the corresponding oil fume content of the range hood. When the oil fume content reaches a preset content threshold, an oil cup cleaning reminder is generated, and the oil fume content is reset to zero. Feedback instructions for the oil cup cleaning reminder are received. When the feedback instruction instructs the user to clean the oil cup, the number of oil cup cleaning reminders generated is incremented by one. When the number of oil cup cleaning reminders generated reaches a first preset number threshold, an impeller cleaning reminder is generated, and the number of oil cup cleaning reminders generated is reset to zero. This method achieves graded intelligent reminders by accurately quantifying the accumulated oil fume volume and combining oil cup cleaning feedback. It can accurately and promptly remind users to clean the oil cup, and can reasonably predict the degree of dirt on the impeller and trigger cleaning reminders, thereby improving the ease of use and smoke extraction effect of the range hood and extending its service life.

[0106] Figure 3 A schematic diagram of the cleaning reminder device provided in this application is shown below. Figure 3 As shown, the cleaning reminder device 300 provided in this embodiment includes:

[0107] The data acquisition module 301 is used to collect the oil fume concentration value of the environment where the range hood is located at a preset frequency when the range hood is in working condition.

[0108] The determination module 302 is used to calculate the instantaneous amount of oil fume based on the collected multiple oil fume concentration values ​​and the effective air intake volume of the range hood, and to accumulate multiple instantaneous oil fume amounts to determine the oil fume content corresponding to the range hood.

[0109] The prompt module 303 is used to generate an oil cup cleaning prompt when the oil fume content reaches a preset content threshold, so as to prompt the user to clean the oil cup of the range hood; and to generate an impeller cleaning prompt when the number of times the oil cup cleaning prompt is generated reaches a first preset number threshold, so as to prompt the user to clean the impeller of the range hood. The preset content threshold is the ratio of the safe oil stain capacity of the oil cup to the oil fume condensation rate, and the first preset number threshold is determined based on the impeller oil stain accumulation amount corresponding to each oil cup cleaning and the impeller safe oil stain threshold.

[0110] As an optional implementation, the cleaning reminder device further includes: a processing module 304;

[0111] Processing module 304 is used to reset the oil fume content to zero.

[0112] As an optional implementation, the cleaning reminder device further includes: a receiving module 305 and a generating module 306;

[0113] The receiving module 305 is used to receive feedback instructions for the oil cup cleaning prompt;

[0114] The generation module 306 is used to increment the number of times an oil cup cleaning prompt is generated when a feedback instruction instructs the user to clean the oil cup.

[0115] As an optional implementation, the generation module 306 is also used to reset the number of times the oil cup cleaning prompt has been generated to zero.

[0116] As an optional implementation, the cleaning reminder device also includes: a control module 307;

[0117] The processing module 304 is also used to increment the number of times the user has ignored the oil cup cleaning prompt when the feedback instruction indicates that the user should not clean the oil cup;

[0118] The control module 307 is used to control the range hood to stop removing oil fumes and display the oil cup cleaning reminder when the number of times the user ignores the oil cup cleaning reminder reaches a second preset threshold.

[0119] As an optional implementation, the cleaning reminder device further includes: an acquisition module 308;

[0120] The acquisition module 308 is used to acquire the liquid level information in the oil cup when the feedback command instructs the user to clean the oil cup;

[0121] The generation module 306 is also used to increment the number of times an oil cup cleaning prompt is generated when the liquid level information indicates that the amount of oil in the oil cup is less than a preset oil level threshold.

[0122] Figure 4 This application provides a structural schematic diagram of a range hood, as shown below. Figure 4As shown, the range hood provided in this embodiment includes: a range hood body, a controller, an oil cup, an impeller, a concentration sensor, and a display, all mounted on the range hood body.

[0123] The controller is connected to the concentration sensor and the display.

[0124] Concentration sensing devices are used to collect the concentration of cooking fumes in the environment where the range hood is located;

[0125] The controller is used to generate oil cup cleaning prompts and / or impeller cleaning prompts based on the oil fume concentration value and using the cleaning prompt method described above, and displays them on the display.

[0126] The range hood body is the core component, integrating or mounting the oil cup, impeller, concentration sensor, and display. The oil cup collects condensed liquid oil, while the impeller's high-speed rotation draws in and exhausts fumes. The concentration sensor (such as an infrared fume sensor) is typically installed near the air inlet to monitor and collect real-time fume concentration data in the kitchen environment. The display is usually located on the control panel to visually display various prompts. The controller connects to the concentration sensor and display via wired or wireless signals. It receives raw fume concentration data (e.g., values ​​every 8 seconds) from the sensor and sends commands to the display to control the information displayed. It also integrates the maintenance logic for the oil cup and impeller, creating a complete functional loop between the hardware components and the control algorithm.

[0127] In actual operation, the controller, relying on the aforementioned hardware, executes the previously mentioned cleaning reminder method: First, it acquires multiple oil fume concentration values ​​through a concentration sensor to calculate the cumulative oil fume content (e.g., 432mg). If the content exceeds a preset threshold (400mg), the controller generates an oil cup cleaning reminder and sends a command to the display, causing the display to light up an indicator light and show the text "Oil cup needs cleaning." When the user reports that the oil cup has been cleaned and the controller confirms through a liquid level sensor that the residual oil level in the oil cup is within the acceptable range, it updates the number of oil cup cleanings (e.g., increasing from 1 to 2). If the number of cleanings reaches a first preset threshold (e.g., 6 times), the controller generates an impeller cleaning reminder, which is also displayed on the display. Even when the user repeatedly ignores the oil cup reminder, the controller will also activate the main fan assembly to stop the range hood's oil fume removal function. Throughout the entire process, the controller acts as the core, coordinating the data acquisition from the concentration sensor, the display of reminders, and the maintenance judgments for the oil cup and impeller, ensuring the cleaning reminder method is effectively implemented and guaranteeing the stable operation of the range hood.

[0128] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the cleaning prompting method performed by the cleaning prompting method device described above.

[0129] It will be understood by those skilled in the art that all or some of the steps, systems, or apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0130] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cleaning reminder method, characterized in that, Applied to range hoods, the method includes: When the range hood is in operation, the concentration of oil fumes in the environment where the range hood is located is collected at a preset frequency. The instantaneous amount of oil fume is calculated based on the collected multiple oil fume concentration values ​​and the effective air intake volume of the range hood. The multiple instantaneous oil fume values ​​are accumulated to determine the oil fume content corresponding to the range hood. When the oil fume content reaches a preset threshold, an oil cup cleaning prompt is generated to remind the user to clean the oil cup of the range hood. When the number of times the oil cup cleaning prompt is generated reaches a first preset number threshold, an impeller cleaning prompt is generated to remind the user to clean the impeller of the range hood. The preset content threshold is the ratio of the safe oil stain capacity of the oil cup to the oil fume condensation rate. The first preset number threshold is determined based on the impeller oil stain accumulation amount and the impeller safe oil stain threshold corresponding to each oil cup cleaning.

2. The method according to claim 1, characterized in that, After generating an oil cup cleaning prompt when the oil fume content reaches a preset threshold, the process further includes: The oil fume content is reset to zero.

3. The method according to claim 1, characterized in that, After generating an oil cup cleaning prompt when the oil fume content reaches a preset threshold to remind the user to clean the oil cup of the range hood, the method further includes: Receive feedback instructions regarding the oil cup cleaning prompt; When the feedback instruction prompts the user to clean the oil cup, the number of times the oil cup cleaning prompt is generated will be incremented by one.

4. The method according to claim 3, characterized in that, When the number of times the oil cup cleaning prompt is generated reaches a first preset threshold, after generating the impeller cleaning prompt, the method further includes: Reset the number of times the oil cup cleaning prompt has been generated to zero.

5. The method according to claim 3, characterized in that, After receiving the feedback instruction for the oil cup cleaning prompt, the method further includes: When the feedback instruction tells the user not to clean the oil cup, the number of times the user has ignored the oil cup cleaning prompt is incremented by one; When the number of times the user ignores the oil cup cleaning prompt reaches a second preset threshold, the range hood will stop removing oil fumes and the oil cup cleaning prompt will be displayed.

6. The method according to claim 3, characterized in that, The step of incrementing the number of times the oil cup cleaning prompt is generated when the feedback instruction instructs the user to clean the oil cup includes: When the feedback command instructs the user to clean the oil cup, the liquid level information inside the oil cup is obtained; When the liquid level information indicates that the amount of oil in the oil cup is less than a preset oil level threshold, the number of times the oil cup cleaning prompt is generated will be incremented by one.

7. A cleaning reminder device, characterized in that, The device, used in range hoods, includes: The data acquisition module is used to collect the oil fume concentration value of the environment where the range hood is located at a preset frequency when the range hood is in working state. The determination module is used to calculate the instantaneous amount of oil fume based on the collected multiple oil fume concentration values ​​and the effective air intake volume of the range hood, and to accumulate the multiple instantaneous oil fume amounts to determine the oil fume content corresponding to the range hood; The prompt module is used to generate an oil cup cleaning prompt when the oil fume content reaches a preset content threshold, so as to prompt the user to clean the oil cup of the range hood, and to generate an impeller cleaning prompt when the number of times the oil cup cleaning prompt is generated reaches a first preset number threshold, so as to prompt the user to clean the impeller of the range hood. The preset content threshold is the ratio of the safe oil stain capacity of the oil cup to the oil fume condensation rate, and the first preset number threshold is determined based on the impeller oil stain accumulation amount and the impeller safe oil stain threshold corresponding to each oil cup cleaning.

8. A range hood, characterized in that, Includes a range hood body, a controller, an oil cup, an impeller, a concentration sensor, and a display mounted on the range hood body; The controller is connected to the concentration sensing device and the display; The concentration sensing device is used to collect the concentration value of oil fumes in the environment where the range hood is located; The controller is used to generate oil cup cleaning prompts and / or impeller cleaning prompts based on the oil fume concentration value, using the cleaning prompt method as described in any one of claims 1-6, and display them through the display.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-6.

Images