Cleaning method and device of extractor hood, extractor hood and storage medium

Abstract

The invention provides an extractor hood cleaning method and device, an extractor hood and a storage medium, the method is applied to the field of household appliances, and when the extractor hood is in a cleaning state, the current cleaning stage of the extractor hood is determined; determining the medium temperature of a cleaning medium corresponding to the cleaning stage; operation of a steam generator and / or a pump body is controlled based on the medium temperature so as to adjust the mixing proportion of water vapor and cleaning agent foam in a cleaning medium, and the higher the medium temperature of the cleaning medium is, the lower the mixing proportion of the cleaning agent foam in the cleaning medium is. The method can improve the cleaning effect of the range hood.

Description

Cleaning methods, devices, range hoods, and storage media for kitchen exhaust fans. Technical Field

[0001] This application relates to the field of household appliances, and more specifically, to a cleaning method, apparatus, range hood, and storage medium for a range hood. Background Technology

[0002] When a range hood is extracting cooking fumes, the impeller rotates continuously to achieve the extraction and discharge of fumes. During this process, oil particles in the fumes flow through the impeller with the airflow, adhere to and deposit in it, which not only increases the wind resistance of the range hood and reduces its smoke extraction performance, but also has an adverse effect on the user's cooking experience and the kitchen environment.

[0003] In related technologies, the cleaning of range hoods mainly focuses on the impeller, which covers a small area, uses a single method, and has poor cleaning effect. Summary of the Invention

[0004] This application provides a cleaning method, apparatus, range hood, and storage medium for a range hood. The method improves the cleaning effect of the range hood by controlling the temperature of the cleaning medium at different cleaning stages and accurately controlling the mixing ratio of detergent foam and water vapor in the cleaning medium to match the cleaning target of that cleaning stage.

[0005] In a first aspect, a method for cleaning a range hood is provided, the method comprising: determining the current cleaning stage of the range hood when the range hood is in a cleaning state; determining the medium temperature of the cleaning medium corresponding to the cleaning stage; and controlling the operation of a steam generator and / or a pump body based on the medium temperature to adjust the mixing ratio of water vapor and detergent foam in the cleaning medium, wherein the higher the medium temperature of the cleaning medium, the lower the mixing ratio of detergent foam in the cleaning medium.

[0006] Optionally, determining the medium temperature of the cleaning medium corresponding to the cleaning stage includes: if the cleaning stage is the main washing stage, then determining the medium temperature of the cleaning medium corresponding to the main washing stage as a first temperature; if the cleaning stage is the rinsing stage, then determining the medium temperature of the cleaning medium corresponding to the cleaning stage as a second temperature, wherein the first temperature is lower than the second temperature.

[0007] Optionally, determining the medium temperature of the cleaning medium corresponding to the cleaning stage includes: if the cleaning stage is a pre-wash stage, then determining the medium temperature of the cleaning medium corresponding to the cleaning stage as a third temperature, wherein the third temperature is greater than the second temperature.

[0008] Optionally, the method further includes: if the cleaning stage is the main washing stage, then controlling the impeller of the range hood to rotate continuously or intermittently at a first operating speed.

[0009] Optionally, after determining the current cleaning stage of the range hood, the method further includes: if the cleaning stage is the drying stage, then turning off the steam generator and pump body, and controlling the impeller to rotate at a second operating speed.

[0010] Optionally, the range hood includes a liquid storage box, a water pump, a steam generator, and nozzles connected in sequence. The operation of the steam generator and / or the pump body is controlled based on the medium temperature, including: determining the heating power of the steam generator based on the medium temperature, and controlling the steam generator to heat the cleaning medium according to the heating power; and / or determining the speed of the water pump based on the medium temperature, and controlling the operation of the water pump according to the speed, wherein the pump body is the water pump.

[0011] Optionally, determining the heating power of the steam generator based on the medium temperature includes: if the medium temperature is a first temperature, then determining the heating power of the steam generator corresponding to the first temperature as a first power; if the medium temperature is a second temperature, then determining the heating power of the steam generator corresponding to the second temperature as a second power; if the medium temperature is a third temperature, then determining the heating power of the steam generator corresponding to the third temperature as a third power, wherein the first power, the second power, and the third power increase sequentially.

[0012] Optionally, determining the pump speed based on the medium temperature includes: if the medium temperature is a first temperature, then determining the pump speed corresponding to the first temperature as a first speed; if the medium temperature is a second temperature, then determining the pump speed corresponding to the second temperature as a second speed; if the medium temperature is a third temperature, then determining the pump speed corresponding to the third temperature as a third speed, wherein the first speed, the second speed, and the third speed decrease sequentially.

[0013] Optionally, the range hood includes a water box, a water pump, a steam generator, and a steam nozzle connected in sequence, and a detergent box, a foaming pump, and a foam nozzle connected in sequence; controlling the operation of the steam generator and / or the pump body based on the medium temperature includes: determining the heating power of the steam generator based on the medium temperature, and controlling the steam generator to heat the cleaning medium according to the heating power; and / or, determining the rotation speed of the water pump and the foaming pump based on the medium temperature, and controlling the operation of the water pump and the foaming pump according to the rotation speed, wherein the pump body includes the water pump and the foaming pump.

[0014] Optionally, determining the rotational speeds of the water pump and the aerator pump based on the medium temperature includes: if the medium temperature is a first temperature, then determining the rotational speed of the water pump corresponding to the first temperature as a fourth rotational speed and the rotational speed of the aerator pump corresponding to the first temperature as a fifth rotational speed; if the medium temperature is a second temperature, then determining the rotational speed of the water pump corresponding to the second temperature as a sixth rotational speed and the rotational speed of the aerator pump corresponding to the second temperature as zero; if the medium temperature is a third temperature, then determining the rotational speed of the water pump corresponding to the third temperature as a seventh rotational speed and the rotational speed of the aerator pump corresponding to the third temperature as an eighth rotational speed; wherein the fourth, sixth, and seventh rotational speeds decrease sequentially, and the fifth rotational speed is greater than the eighth rotational speed.

[0015] Optionally, after controlling the operation of the steam generator and / or pump body based on the medium temperature, the method further includes: if it is determined that the cleaning of the range hood is complete, outputting a prompt message, which may be at least one of a voice prompt or a visual prompt.

[0016] Optionally, before determining the current cleaning stage of the range hood, at least one of the following is included: obtaining the oil and dirt level of the range hood; if the oil and dirt level is greater than or equal to the dirt level threshold, controlling the range hood to enter the cleaning state; if a touch operation is detected on the cleaning button of the range hood, controlling the range hood to enter the cleaning state.

[0017] Secondly, a cleaning device for a range hood is provided, comprising: a stage determination unit for determining the current cleaning stage of the range hood when it is in a cleaning state; a temperature determination unit for determining the temperature of the cleaning medium corresponding to the cleaning stage; and a control unit for controlling the operation of a steam generator and / or a pump body based on the medium temperature to adjust the mixing ratio of water vapor and detergent foam in the cleaning medium, wherein the higher the medium temperature of the cleaning medium, the lower the mixing ratio of detergent foam in the cleaning medium.

[0018] Thirdly, a range hood is provided, comprising: a memory for storing executable program code; and a processor for calling and running the executable program code from the memory, causing the range hood to perform the method described in the first aspect or any possible implementation thereof.

[0019] Fourthly, a computer program product is provided, comprising: computer program code, which, when run on a computer, causes the computer to perform the methods described in the first aspect or any possible implementation thereof.

[0020] Fifthly, a computer-readable storage medium is provided that stores computer program code, which, when executed on a computer, causes the computer to perform the methods described in the first aspect or any possible implementation thereof.

[0021] In this embodiment, when the range hood is in cleaning mode, the temperature of the cleaning medium corresponding to the current cleaning stage is determined. The operation of the steam generator and / or pump is then controlled based on this temperature, thereby adjusting the mixing ratio of water vapor and cleaning foam in the cleaning medium. This dynamic adjustment of the mixing ratio of water vapor and cleaning foam in the cleaning medium ensures it matches the cleaning target of each cleaning stage of the range hood, allowing the cleaning medium to function optimally in each stage and improving the cleaning effect of the range hood. Attached Figure Description

[0022] Figure 1 is a structural schematic diagram of a range hood provided in an embodiment of this application; Figure 2 is a flowchart illustrating a cleaning method for a range hood provided in an embodiment of this application; Figure 3 is a flowchart illustrating a cleaning method for a range hood provided in an embodiment of this application; Figure 4 is a flowchart illustrating a cleaning method for a range hood provided in an embodiment of this application; Figure 5 is a structural schematic diagram of another range hood provided in an embodiment of this application; Figure 6 is a flowchart illustrating a cleaning method for a range hood provided in an embodiment of this application; Figure 7 is a structural schematic diagram of a cleaning device for a range hood provided in an embodiment of this application; Figure 8 is a structural schematic diagram of a range hood provided in an embodiment of this application; Figure 9 is an example schematic diagram illustrating the medium temperature corresponding to each cleaning stage provided in an embodiment of this application. Detailed Implementation

[0023] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0024] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0025] Please refer to Figure 1, which is a structural schematic diagram of a range hood provided in an embodiment of this application. As shown in Figure 1, the range hood 1 includes an impeller 11, a steam generator 12, a nozzle 13, a liquid storage box 14, and a pump body 15.

[0026] The liquid storage box 14, pump body 15, steam generator 12, and nozzle 13 are connected in sequence. The pump body 15 provides driving force to transport the cleaning medium in the liquid storage box 14 to the steam generator 12. The steam generator 12 heats the cleaning medium, and the water in the cleaning medium absorbs heat and vaporizes to generate high-temperature steam, which dissolves and cleans the grease on the impeller and volute of the range hood. The cleaning medium can be clean water or a cleaning solution with added detergent, depending on the cleaning needs, to improve the grease dissolving effect.

[0027] Range hoods are installed above the cooking area to absorb and exhaust cooking fumes, maintaining a clean and comfortable kitchen environment. During fume extraction, an impeller mounted on the hood's casing rotates at high speed, creating negative pressure airflow through centrifugal force to quickly draw in and directionally exhaust kitchen fumes. During this process, grease particles, food residue, and other impurities from the fumes are carried by the airflow into the impeller and casing, adhering to them and accumulating over time to form a dense layer of grease. This continuous accumulation not only reduces exhaust efficiency, increases operating noise, and raises energy consumption, gradually weakening the range hood's performance, but also damages the kitchen's cleanliness and disrupts the user's cooking process due to overflowing grease or spreading odors, thus diminishing the user experience. Current cleaning solutions for range hoods typically focus on the impeller alone, limiting the cleaning scope and often employing only steam rinsing or foam wiping, resulting in poor cleaning effectiveness.

[0028] Based on this, this application proposes a cleaning method for range hoods. When the range hood is in a cleaning state, the method determines the temperature of the cleaning medium corresponding to the current cleaning stage, and then controls the operation of the steam generator and / or pump based on this temperature, thereby adjusting the mixing ratio of water vapor and cleaning foam in the cleaning medium. By dynamically adjusting the mixing ratio of water vapor and cleaning foam in the cleaning medium to match the cleaning target of each cleaning stage of the range hood, the cleaning medium can play its optimal role in each cleaning stage, improving the cleaning effect of the range hood.

[0029] Based on the structural diagram shown in Figure 1, the cleaning method of the range hood provided in the embodiments of this application will be described in detail below with reference to Figures 2-6.

[0030] Please refer to Figure 2, which is a flowchart illustrating a cleaning method for a range hood provided in this embodiment of the application. As shown in Figure 2, the method in this embodiment may include the following steps S101-S103.

[0031] S101, when the range hood is in cleaning mode, determine the current cleaning stage of the range hood; in one embodiment, control the range hood to enter cleaning mode to clean the grease on the impeller and volute of the range hood. The range hood can be triggered to enter cleaning mode automatically or manually. In automatic trigger mode, the cumulative running time of the range hood can be calculated based on grease adhesion data (such as grease adhesion density) fed back by the built-in dirt detection module, or by using each cleaning cycle as a calculation period. When the cumulative running time reaches the preset cleaning time, the range hood is automatically controlled to enter cleaning mode. In manual trigger mode, the user inputs cleaning parameters through the range hood's interactive panel to control the range hood to enter cleaning mode.

[0032] Optionally, in this embodiment, when the range hood is in cleaning mode and the impeller or volute is being cleaned, the required cleaning stage is not fixed. In automatic trigger mode, the required cleaning stage can be selectively determined based on the feedback oil adhesion data. For example, if the dirt detection module reports an oil adhesion density of Ag / m³ on the impeller and volute. 2 (g / m²) indicates light soiling, with the oil stains consisting mainly of floating oil and no stubborn carbonized oil. When entering cleaning mode, the range hood can skip the softening stage of the cleaning process.

[0033] Similarly, in manual trigger mode, users can input the desired cleaning stage of the range hood in the interactive panel.

[0034] Optionally, in this embodiment, the range hood can be uniformly controlled to complete all cleaning stages. No restrictions are placed on the specific cleaning stages the range hood needs to enter when it enters the cleaning state.

[0035] Understandably, the cleaning command that controls the range hood to enter the cleaning state includes the cleaning time required for each cleaning stage. Therefore, based on the received cleaning command, the range hood can be controlled to enter the cleaning state and start timing. The working time can be counted and compared with the cleaning time required for each cleaning stage to determine the cleaning stage the range hood is in.

[0036] S102, determine the medium temperature of the cleaning medium corresponding to the cleaning stage; in one embodiment, after the cleaning medium is heated by a steam generator, the water in the cleaning medium absorbs heat and partially evaporates to generate water vapor, which is sprayed onto the impeller and volute through a nozzle connected thereto; in addition, the cleaning solute in the cleaning medium and the unevaporated water mix to generate cleaning foam, which is sprayed onto the impeller and volute through a nozzle connected thereto.

[0037] Specifically, when the steam generator heats the cleaning medium, the water in the cleaning medium absorbs heat and vaporizes to generate water vapor. This process continuously consumes water in the cleaning medium. As the water in the cleaning medium decreases, the ratio of cleaning solute to water in the cleaning medium changes. Water, as the carrier of foam formation, decreases in its content, directly leading to a reduction in the amount of detergent foam generated. That is, the higher the heating power of the steam generator, the more heat the water in the cleaning medium absorbs and vaporizes, resulting in a greater amount of water vapor generated. However, the remaining water in the cleaning medium that is miscible with the cleaning solute to generate foam decreases, leading to a reduction in the amount of detergent foam generated. Consequently, the proportion of cleaning foam and the proportion of water vapor in the cleaning medium mixture sprayed from the nozzle is lower.

[0038] Therefore, in this embodiment, numerous repeated experiments can be conducted beforehand to record the different cleaning effects achieved by controlling the temperature of the cleaning medium heated by the steam generator at different cleaning stages (different mixing ratios of water vapor and detergent foam). The optimal cleaning temperature can then be selected as the medium temperature for that cleaning stage, generating a temperature mapping table between cleaning stages and medium temperatures. During use, the range hood can then determine the corresponding medium temperature for the current cleaning stage using this temperature mapping table.

[0039] For example, when the range hood is in cleaning mode, the cleaning stages required to complete the cleaning process can include a pre-wash stage and a main wash stage. Since the cleaning goal of the pre-wash stage is to soften the grease on the impeller and volute, it requires a large amount of high-temperature water vapor. After determining that the current cleaning stage of the range hood is the pre-wash stage, the medium temperature of the cleaning medium corresponding to this pre-wash stage is determined to be 105°C. The cleaning goal of the main wash stage is to use detergent foam to cover and wet the grease on the impeller and volute, requiring a large amount of detergent foam. According to the temperature mapping table, the medium temperature of the cleaning medium corresponding to the main wash stage is determined to be 65°C. In the main wash stage, controlling the medium temperature of the cleaning medium at 65°C avoids the problem of rapid heat absorption and vaporization of water in the cleaning medium due to excessively high temperatures, leading to a decrease in water content and consequently a reduction in foam content. At the same time, a suitable temperature provides a good thermal environment for the cleaning solutes in the cleaning medium to react with the grease on the impeller and volute surface, ensuring a complete catalytic reaction and guaranteeing the cleaning effect.

[0040] S103, based on the medium temperature, controls the operation of the steam generator and / or pump body to adjust the mixing ratio of water vapor and detergent foam in the cleaning medium, wherein the higher the medium temperature of the cleaning medium, the lower the mixing ratio of detergent foam in the cleaning medium.

[0041] In one embodiment, after determining the temperature of the cleaning medium corresponding to the current cleaning stage of the range hood, the operation of the steam generator and / or pump is controlled. This involves controlling the flow rate of the cleaning medium supplied to the steam generator and the heating of the cleaning medium by the steam generator to produce cleaning agent foam and water vapor. The mixing ratio refers to the "proportion" of water vapor and cleaning agent foam within the cleaning medium.

[0042] In one embodiment, after determining the temperature of the cleaning medium, the operation of the steam generator and / or pump can be controlled by the relationship between the real-time temperature of the cleaning medium and the medium temperature collected by the temperature detection component. Specifically, this includes the following methods: Method 1: Adjusting the heating power of the steam generator.

[0043] When the real-time temperature is lower than the medium temperature, the heating power of the steam generator is increased to increase the heat output and the amount of water vapor generated, which increases the proportion of water vapor in the cleaning medium and relatively decreases the proportion of detergent foam. When the real-time temperature is higher than the medium temperature, the power of the steam generator is reduced to decrease the amount of water vapor generated, which decreases the proportion of water vapor. More water in the cleaning medium reacts with the cleaning solute, resulting in a relatively higher proportion of detergent foam.

[0044] Method 2: Adjust the pump speed.

[0045] When the real-time temperature is lower than the medium temperature, the pump speed is reduced, and the flow rate of the cleaning medium delivered to the steam generator is decreased. The cleaning medium fully absorbs heat and evaporates, increasing the proportion of water vapor in the cleaning medium and relatively decreasing the proportion of detergent foam. When the real-time temperature is higher than the medium temperature, the pump speed is increased, increasing the flow rate of the cleaning medium delivered to the steam generator. The proportion of water vapor in the cleaning medium decreases, and there is more water in the cleaning medium that reacts with the cleaning solute, resulting in a relatively higher proportion of detergent foam.

[0046] Method 3: Simultaneously adjust the heating power of the steam generator and the speed of the pump.

[0047] When the real-time temperature is lower than the medium temperature, the pump speed is reduced while the heating power of the steam generator is increased. This reduces the flow rate of the cleaning medium supplied to the steam generator, increases heat, and causes the cleaning medium to rapidly absorb heat and evaporate. Consequently, the proportion of water vapor in the cleaning medium increases rapidly, while the proportion of detergent foam decreases relatively. When the real-time temperature is higher than the medium temperature, the pump speed is increased while the heating power of the steam generator is reduced. This increases the flow rate of the cleaning medium supplied to the steam generator, reduces heat, and causes the proportion of water vapor in the cleaning medium to decrease. Since there is more moisture in the cleaning medium, it reacts with the cleaning solute, resulting in a rapid increase in the proportion of detergent foam and a decrease in the proportion of water vapor.

[0048] In this embodiment, when the range hood is in cleaning mode, the temperature of the cleaning medium corresponding to the current cleaning stage is determined. The operation of the steam generator and / or pump is then controlled based on this temperature, thereby adjusting the mixing ratio of water vapor and cleaning foam in the cleaning medium. This dynamic adjustment of the mixing ratio of water vapor and cleaning foam in the cleaning medium ensures it matches the cleaning target of each cleaning stage of the range hood, allowing the cleaning medium to function optimally in each stage and improving the cleaning effect of the range hood.

[0049] Please refer to Figure 3, which is a flowchart illustrating a cleaning method for a range hood provided in this application embodiment. As shown in Figure 3, the method in this application embodiment may include the following steps S201-S205.

[0050] S201, when the range hood is in the cleaning state, determine the current cleaning stage of the range hood; specifically, please refer to the description of step S101 in the above-mentioned embodiment of the instruction manual, which will not be repeated here.

[0051] S202, If the cleaning stage is the pre-wash stage, then the medium temperature of the cleaning medium corresponding to the cleaning stage is determined to be the third temperature; S203, If the cleaning stage is the main wash stage, then the medium temperature of the cleaning medium corresponding to the main wash stage is determined to be the first temperature; S204, If the cleaning stage is the rinsing stage, then the medium temperature of the cleaning medium corresponding to the cleaning stage is determined to be the second temperature, wherein the first temperature is lower than the second temperature and the third temperature is higher than the second temperature; S205, If the cleaning stage is the air-drying stage, then the steam generator and pump body are turned off, and the impeller is controlled to rotate at the second operating speed.

[0052] In one embodiment, the range hood sequentially goes through a pre-washing stage, a main washing stage, a rinsing stage, and a drying stage.

[0053] The goal of the pre-washing stage is to soften the grease on the impeller and volute. This requires a large amount of high-temperature steam, meaning a cleaning medium with a high proportion of steam is needed. Therefore, the cleaning medium temperature corresponding to this stage is determined to be the third temperature. It is understood that in this embodiment, the cleaning duration of the pre-washing stage is set according to the degree of grease adhesion on the impeller and volute. For example, if the grease adhesion density on the impeller and volute is high, the cleaning duration of the pre-washing stage is determined to be longer, allowing the high-temperature steam to fully soften the grease on the impeller and volute. In the pre-washing stage, a higher third temperature is used as the cleaning medium temperature, allowing the cleaning medium to fully vaporize and form steam. Through the penetration and wetting effect of the steam, the stubborn grease on the impeller and volute surface is effectively softened, enhancing the reaction efficiency of the cleaning solute with the grease on the component surface during subsequent cleaning, thereby improving the overall cleaning effect and reducing the amount of cleaning medium used.

[0054] Furthermore, during the pre-washing stage, the impeller can be controlled to operate at a set speed. The airflow and turbulence generated by the impeller rotation allow the cleaning medium to be more evenly dispersed and covered on the impeller and volute, improving the wetting and softening effect of the oil stains and creating favorable conditions for efficient cleaning in the subsequent main cleaning stage.

[0055] The goal of the main wash stage is to cover and soak the impeller and volute with detergent foam, requiring a large amount of detergent foam, meaning a high proportion of detergent foam in the cleaning medium. The temperature of the cleaning medium for the main wash stage is designated as the first temperature. Similarly, the cleaning time for the pre-main wash stage can be set according to the different densities of oil adhesion on the impeller and volute. For example, if the oil adhesion density on the impeller and volute is high, the cleaning time for the main wash stage should be longer to allow the cleaning solutes in the detergent foam to fully react chemically with the oil and dissolve it. Using the lower first temperature as the medium temperature for the main wash stage ensures the highest detergent foam content, allowing it to fully adhere to the oily surface of the impeller and volute, react chemically, and remove the oil.

[0056] Furthermore, during the main wash phase, the impeller can be controlled to rotate continuously or intermittently at a first operating speed. The impeller rotation drives the detergent foam to circulate, agitate, and mix thoroughly between the impeller and the volute, ensuring the foam evenly covers all surfaces of the impeller and volute. This enhances the contact area and contact time between the foam and oil stains, improving the encapsulation and removal effect on oil stains, thereby increasing the cleaning efficiency and cleanliness of the main wash phase. For example, the first operating speed can be 500 rpm (revolutions per minute). When the impeller rotates intermittently at this first operating speed, the time interval can be 30 seconds, and each rotation can last for 1 minute. This ensures the foam evenly covers the surfaces of the impeller and volute, while reducing the continuous load on the motor and transmission components, thus lowering energy consumption.

[0057] The cleaning objective of the rinsing stage is to remove the detergent foam adhering to the impeller and volute casing from the main washing stage (primarily removing cleaning solutes). This stage requires a reduced proportion of detergent foam, and the required water vapor content is lower than in the pre-wash stage. Therefore, the temperature of the cleaning medium in the steam generator corresponding to this stage is controlled to a second temperature. For example, in this embodiment, the first temperature can be 65°C, the second temperature is 85°C, and the third temperature is 105°C. The magnitude of the medium temperature in each cleaning stage can be seen in Figure 9, which is an example schematic diagram of the medium temperatures corresponding to each cleaning stage provided in this embodiment.

[0058] Furthermore, during the rinsing stage, the impeller can be controlled at a set operating speed. The airflow and turbulence generated by the impeller's rotation quickly rinse away the detergent foam that accumulated on the impeller and volute surfaces during the main wash, using a cleaning medium with a lower proportion of detergent foam. This prevents detergent foam residue from remaining on the impeller and volute surfaces. Using a lower secondary temperature as the cleaning medium temperature further reduces the proportion of detergent foam in the cleaning medium, and the rinsing process also prevents detergent foam residue.

[0059] Optionally, during the rinsing stage, the rinsing duration can be determined based on the amount of cleaning medium sprayed during the main wash stage.

[0060] Furthermore, in this embodiment, if the process is in the drying stage, the steam generator and pump are turned off, and the impeller is controlled to rotate at the second operating speed.

[0061] The cleaning objective of the air-drying stage is to quickly remove surface moisture and air-dry the impeller and volute after cleaning, by rotating the impeller to generate airflow. This process requires no heating or cleaning medium; the steam generator and pump are shut off. For example, the impeller's second operating speed during the air-drying stage can be 1000 r / pm.

[0062] Please refer to Figure 4, which is a flowchart illustrating a cleaning method for a range hood provided in this embodiment of the application. As shown in Figure 4, the method in this embodiment may include the following steps S301-S304.

[0063] S301, when the range hood is in cleaning mode, determine the current cleaning stage of the range hood; S302, determine the medium temperature of the cleaning medium corresponding to the cleaning stage; S303, determine the heating power of the steam generator based on the medium temperature, and control the steam generator to heat the cleaning medium according to the heating power; and / or, S304, determine the speed of the water pump based on the medium temperature, and control the operation of the water pump according to the speed, wherein the pump body is the water pump, to adjust the mixing ratio of water vapor and detergent foam in the cleaning medium, wherein the higher the medium temperature of the cleaning medium, the lower the mixing ratio of detergent foam in the cleaning medium.

[0064] In one embodiment, referring to the structure shown in Figure 1, the pump body shown in Figure 1 is a water pump, and the range hood includes a liquid storage box, a water pump, a steam generator, and nozzles connected in sequence. A temperature-power-speed mapping table can be obtained in advance through experiments. After determining the temperature of the cleaning medium, the heating power of the steam generator and / or the speed of the water pump can be directly determined according to the temperature-power-speed mapping table. The steam generator is controlled to heat the cleaning medium according to the heating power, and / or the operation of the water pump is controlled according to the speed.

[0065] Specifically, determining the heating power of the steam generator based on the medium temperature includes: if the medium temperature is a first temperature, then determining the heating power of the steam generator corresponding to the first temperature as the first power; if the medium temperature is a second temperature, then determining the heating power of the steam generator corresponding to the second temperature as the second power; if the medium temperature is a third temperature, then determining the heating power of the steam generator corresponding to the third temperature as the third power, wherein the first power, the second power, and the third power increase sequentially.

[0066] In the pre-wash stage, the range hood uses a temperature-power-speed mapping table to determine the heating power of the steam generator corresponding to the third temperature as the third power. The third power is relatively high, resulting in a higher temperature for the cleaning medium after heating by the steam generator, and a higher mixing ratio of water and steam in the cleaning medium. In the main wash stage, the range hood uses a temperature-power-speed mapping table to determine the heating power of the steam generator corresponding to the first temperature as the first power. The first power is relatively low, resulting in a lower temperature for the cleaning medium after heating by the steam generator, and a higher mixing ratio of detergent foam in the cleaning medium. In the rinsing stage, the range hood uses a temperature-power-speed mapping table to determine the heating power of the steam generator corresponding to the second temperature as the second power. The second power is higher than the first power but lower than the third power. The temperature for the cleaning medium after heating by the steam generator is the second temperature, which is higher than the first temperature but lower than the third temperature. The mixing ratio of detergent foam in the cleaning medium is lower than that of the cleaning medium corresponding to the second temperature. For example, the first power can be 1000W, the second power can be 1200W, and the third power can be 2000W.

[0067] The heating power of the corresponding steam generator is directly determined by the temperature of the medium, and the operation of the steam generator is accurately controlled so that the temperature of the heated cleaning medium matches the current cleaning stage of the range hood, thereby improving the cleaning efficiency of the range hood.

[0068] In this embodiment of the application, by determining the heating power of the steam generator corresponding to the medium temperature, it is possible to achieve precise and stable control of the medium temperature of the cleaning medium.

[0069] Specifically, determining the pump speed based on the medium temperature includes: if the medium temperature is a first temperature, then determining the pump speed corresponding to the first temperature as the first speed; if the medium temperature is a second temperature, then determining the pump speed corresponding to the second temperature as the second speed; if the medium temperature is a third temperature, then determining the pump speed corresponding to the third temperature as the third speed, wherein the first speed, second speed, and third speed decrease sequentially.

[0070] In the pre-wash stage, the range hood uses a temperature-power-speed mapping table to determine the pump speed corresponding to the third temperature as the third speed. A lower third speed results in less cleaning medium being delivered to the steam generator, leading to a longer residence time of the cleaning medium per unit volume within the steam generator. This ensures more thorough contact with the heating chamber surface, allowing for more complete heat absorption and rapid heating and efficient vaporization of the cleaning medium, generating a large amount of water vapor. The heated medium temperature is the third temperature, which is higher, resulting in a higher water vapor content in the cleaning medium. In the main wash stage, the range hood uses a temperature-power-speed mapping table to determine the pump speed corresponding to the first temperature as the first speed. A higher first speed delivers more cleaning medium to the steam generator, resulting in a higher water vapor content per unit volume. The shorter the residence time of the cleaning medium in the steam generator, the less heat it absorbs. After heating, the temperature of the cleaning medium is the first temperature, which is relatively low, resulting in a higher mixing ratio of detergent foam in the cleaning medium. During the rinsing stage, the range hood determines the pump speed corresponding to the second temperature based on the temperature-power-speed mapping table. The second speed is higher than the third speed but lower than the first speed. This results in more cleaning medium being delivered to the steam generator than the first speed, leading to a shorter residence time per unit volume of cleaning medium in the steam generator. Part of the medium absorbs heat and vaporizes, producing a small amount of water vapor. After heating, the medium temperature is again the second temperature, which is higher than the first temperature but lower than the third temperature, resulting in a moderate mixing ratio of water vapor in the cleaning medium. For example, the first speed can be 500 r / pm, the second speed can be 300 r / pm, and the third speed can be 100 r / pm. The pump speed is directly determined by the temperature of the medium, which accurately controls the flow rate of the cleaning medium delivered by the pump to the steam generator for heating. This ensures that the temperature of the heat-absorbing cleaning medium matches the current cleaning stage of the range hood, thereby improving the cleaning efficiency of the range hood.

[0071] Please refer to Figure 5, which provides a structural schematic diagram of another range hood according to an embodiment of this application. As shown in Figure 5, the pump body 15 includes a water pump 151 and an aerator pump 152. The range hood includes a water box 17, a water pump 151, a steam generator 12, and a steam nozzle 16 connected in sequence, as well as a detergent box 18, a foaming pump 152, and a foam nozzle 19 connected in sequence.

[0072] It should be noted that, in this embodiment, the cleaning medium includes detergent composed of cleaning solute and water in detergent box 18, and water stored in water box 17. Foaming pump 152 provides driving force for the detergent, forming cleaning foam which is then delivered to foam nozzle 19 and finally sprayed onto the impeller 11 and volute of the range hood (not shown in the figure). Water pump 151 provides driving force for the water, delivering water from water box 17 to steam generator 12. After being heated by steam generator 12, the water is delivered to steam nozzle 16 and finally sprayed onto the impeller 11 and volute of the range hood. The cleaning solute content in detergent box 18 is 5%. By setting an appropriate cleaning solute content, the detergent is prevented from being too thick, resulting in poor foaming effect, while also preventing the detergent from being too thin, which would reduce the cleaning effect.

[0073] In this embodiment of the application, when the range hood is in the cleaning state, the mixing ratio of cleaning agent foam and water vapor can be controlled by controlling the rotation speed of the foaming pump 152 and the water pump 151 and / or the heating power of the steam generator 12, that is, by controlling the flow rate of cleaning agent foam sprayed from the foam nozzle 19 and the flow rate of water vapor sprayed from the steam nozzle 16, and / or controlling the heating power of the steam generator 12.

[0074] Based on the structural schematic diagram of the range hood shown in Figure 5, please refer to Figure 6, which is a flowchart illustrating a cleaning method for a range hood according to an embodiment of this application. As shown in Figure 6, the method of this embodiment may include the following steps S401-S404.

[0075] S401, when the range hood is in cleaning mode, determine the current cleaning stage of the range hood; S402, determine the medium temperature of the cleaning medium corresponding to the cleaning stage; S403, determine the heating power of the steam generator based on the medium temperature, and control the steam generator to heat the cleaning medium according to the heating power; and / or, S404, determine the speed of the water pump and the aerator pump based on the medium temperature, and control the operation of the water pump and the aerator pump according to the speed, wherein the pump body includes the water pump and the aerator pump.

[0076] In one embodiment, when the water and detergent in the range hood are stored separately, the mixing ratio of water vapor and detergent foam in the cleaning medium can be adjusted by controlling the rotation speed of the water pump and the foaming pump. In another embodiment, the heating power of the steam generator can be controlled separately to adjust the mixing ratio of water vapor and detergent foam in the cleaning medium. In yet another embodiment, the rotation speed of the water pump and the foaming pump, as well as the heating power of the steam generator, can be controlled simultaneously to adjust the mixing ratio of water vapor and detergent foam in the cleaning medium.

[0077] Furthermore, determining the rotational speeds of the water pump and the aerator pump based on the medium temperature includes: if the medium temperature is a first temperature, then determining the rotational speed of the water pump corresponding to the first temperature as a fourth rotational speed and the rotational speed of the aerator pump corresponding to the first temperature as a fifth rotational speed; if the medium temperature is a second temperature, then determining the rotational speed of the water pump corresponding to the second temperature as a sixth rotational speed and the rotational speed of the aerator pump corresponding to the second temperature as zero; if the medium temperature is a third temperature, then determining the rotational speed of the water pump corresponding to the third temperature as a seventh rotational speed and the rotational speed of the aerator pump corresponding to the third temperature as an eighth rotational speed; wherein the fourth, sixth, and seventh rotational speeds decrease sequentially, and the fifth rotational speed is greater than the eighth rotational speed.

[0078] In one embodiment, the rotational speeds of the water pump and the aerator corresponding to each medium temperature can also be determined based on the temperature-power-speed relationship table.

[0079] Specifically, in the pre-wash stage, the range hood, based on the temperature-power-speed relationship table, determines the water pump speed corresponding to the third temperature as the seventh speed and the foaming pump speed corresponding to the third temperature as the eighth speed. The seventh speed is lower, resulting in less water (cleaning medium) being delivered from the water box to the steam generator, allowing for more thorough contact with the heating chamber surface of the steam generator, enabling more complete heat absorption, rapid heating, and efficient vaporization, producing a large amount of water vapor. The eighth speed is lower, resulting in a smaller flow rate of detergent (cleaning medium) delivered from the detergent box, producing less detergent foam. The mixing ratio of water and steam in the cleaning medium after mixing in the steam nozzle and foam nozzle is higher. In the main wash stage, the range hood, based on the temperature-power-speed relationship table, determines the water pump speed corresponding to the first temperature as the fourth speed and the foaming pump speed corresponding to the first temperature as the fifth speed. The fourth speed is higher, resulting in a larger flow rate of water (cleaning medium) being delivered from the water box to the steam generator, allowing for more thorough heat absorption, rapid heating, and efficient vaporization, producing a large amount of water vapor. The eighth speed is lower, resulting in a smaller flow rate of detergent (cleaning medium) being delivered from the detergent box, producing less detergent foam. The mixing ratio of water and steam in the cleaning medium after mixing in the steam nozzle and foam nozzle is higher. The generator delivers a larger amount of water, resulting in a shorter residence time of the cleaning medium per unit volume within the steam generator. This leads to less heat absorption and less steam production. A higher fifth rotation speed results in a larger amount of cleaning agent foam, thus achieving a higher mixing ratio of cleaning agent foam in the cleaning medium. During the rinsing stage, the range hood, based on the temperature-power-speed relationship table, determines the water pump speed corresponding to the second temperature as the sixth rotation speed and sets the aeration pump speed corresponding to the second temperature to zero (i.e., the aeration pump is turned off). The sixth rotation speed is greater than the seventh rotation speed but less than the fourth rotation speed, delivering more cleaning medium to the steam generator than the fourth rotation speed. This results in a more suitable mixing ratio of water and steam in the heated cleaning medium. For example, the fourth rotation speed can be 450 rpm, the sixth rotation speed can be 250 rpm, the seventh rotation speed can be 90 rpm, the fifth rotation speed can be 50 rpm, and the eighth rotation speed can be 10 rpm. The rotation speed of the corresponding water pump and bubble pump is directly determined by the temperature of the medium, which accurately controls the flow rate of the cleaning medium delivered by the water pump and bubble pump. This ensures that the mixing ratio of water vapor and detergent foam in the cleaning medium matches the current cleaning stage of the range hood, thereby improving the cleaning efficiency of the range hood.

[0080] It is understandable that even if the water and detergent in the range hood are stored separately, and the steam generator heats the water, the way to control the heating power of the steam generator in this usage scenario is the same as the way to control the heating power of the steam generator when the water and detergent are stored together in the liquid storage box in the above embodiment, and will not be repeated here.

[0081] Furthermore, in this embodiment of the application, if it is determined that the range hood cleaning is complete, a prompt message is output, which is at least one of voice prompt and visual prompt.

[0082] Specifically, the notification message is used to inform the user that the impeller and volute have been cleaned, and the notification message can be at least one of voice prompts or visual prompts; wherein, the voice prompt can be broadcast through the built-in speaker of the range hood. For example, it can be "Cleaning complete, ready for normal use". Voice prompts allow users to quickly and easily know the cleaning status in other areas of the kitchen.

[0083] Visual prompts can be provided through indicator lights or interactive panels on the control panel of the range hood. For example, the indicator lights can switch from flashing to constant light when the cleaning is in progress, or the interactive panel can directly display the text "Cleaning Complete" and a schematic diagram of the impeller and volute after cleaning, providing intuitive feedback on the cleaning results.

[0084] Furthermore, in this embodiment of the application, before determining the current cleaning stage of the range hood, at least one of the following is included: obtaining the oil and dirt level of the range hood; if the oil and dirt level is greater than or equal to the dirt level threshold, then controlling the range hood to enter the cleaning state; if a touch operation is detected on the cleaning button of the range hood, then controlling the range hood to enter the cleaning state.

[0085] In one embodiment, a physical image of the impeller and volute can be acquired using an imaging device to determine the degree of oil contamination on the impeller and volute. Optionally, the acquired physical image of the impeller and volute can be grayscale binarized, and the oil contamination can be extracted as a contour. The degree of oil contamination is determined by comparing the ratio of the black pixels represented by the oil contamination to the total area of ​​the impeller and volute with a contamination threshold. For example, if the ratio is determined to be 80% and the contamination threshold is 30%, the range hood can be controlled to enter a cleaning state. This achieves intelligent control of the range hood for cleaning.

[0086] In one embodiment, a cleaning command for the impeller can be generated upon detecting a touch operation on the cleaning button of the range hood. For example, if the touch-sensitive cleaning button on the range hood's interface panel receives a valid press signal from the user (this signal must meet a preset touch duration threshold, such as a continuous touch for more than 0.5 seconds to eliminate accidental touch interference), the system will respond to the operation signal, retrieve the cleaning parameter configuration library pre-stored in the system, and control the range hood to enter the cleaning state. This improves the convenience for users to manually control the range hood for cleaning.

[0087] Based on the structural schematic diagram in Figure 1, the cleaning device for a range hood provided in this application will be described in detail below with reference to Figure 7. It should be noted that the cleaning device for the range hood in Figure 7 is used to execute the method of the embodiments shown in Figures 2-6 of this application. For ease of explanation, only the parts related to the embodiments of this application are shown. For specific technical details not disclosed, please refer to the embodiments shown in Figures 2-6 of this application. Specifically, the cleaning device 2 for the range hood includes: a stage determination unit 21, used to determine the current cleaning stage of the range hood when it is in a cleaning state; a temperature determination unit 22, used to determine the medium temperature of the cleaning medium corresponding to the cleaning stage; and a control unit 23, used to control the operation of the steam generator and / or pump body based on the medium temperature to adjust the mixing ratio of water vapor and detergent foam in the cleaning medium, wherein the higher the medium temperature of the cleaning medium, the lower the mixing ratio of detergent foam in the cleaning medium.

[0088] Optionally, the temperature determining unit 22 is configured to: if the cleaning stage is a main washing stage, determine the medium temperature of the cleaning medium corresponding to the main washing stage as a first temperature; if the cleaning stage is a rinsing stage, determine the medium temperature of the cleaning medium corresponding to the cleaning stage as a second temperature, wherein the first temperature is lower than the second temperature.

[0089] Optionally, the temperature determination unit 22 is used to: if the cleaning stage is a pre-washing stage, determine the medium temperature of the cleaning medium corresponding to the cleaning stage as a third temperature, wherein the third temperature is greater than the second temperature.

[0090] Optionally, the temperature determining unit 22 is used to: if the cleaning stage is the main washing stage, control the impeller of the range hood to rotate continuously or intermittently at a first operating speed.

[0091] Optionally, the temperature determination unit 22 is configured to: if the cleaning stage is a drying stage, shut down the steam generator and the pump body, and control the impeller to rotate at a second operating speed.

[0092] Optionally, the range hood includes a liquid storage box, a water pump, a steam generator, and nozzles connected in sequence. The control unit 23 is used to: determine the heating power of the steam generator based on the medium temperature, and control the steam generator to heat the cleaning medium according to the heating power; and / or, determine the speed of the water pump based on the medium temperature, and control the operation of the water pump according to the speed, wherein the pump body is the water pump.

[0093] Optionally, the control unit 23 is configured to: if the medium temperature is the first temperature, determine the heating power of the steam generator corresponding to the first temperature as a first power; if the medium temperature is the second temperature, determine the heating power of the steam generator corresponding to the second temperature as a second power; if the medium temperature is the third temperature, determine the heating power of the steam generator corresponding to the third temperature as a third power, wherein the first power, the second power, and the third power increase sequentially.

[0094] Optionally, the control unit 23 is configured to: if the medium temperature is the first temperature, determine the speed of the water pump corresponding to the first temperature as a first speed; if the medium temperature is the second temperature, determine the speed of the water pump corresponding to the second temperature as a second speed; if the medium temperature is the third temperature, determine the speed of the water pump corresponding to the third temperature as a third speed, wherein the first speed, the second speed, and the third speed decrease sequentially.

[0095] Optionally, the range hood includes a water box, a water pump, a steam generator, and a steam nozzle connected in sequence, and a detergent box, a foaming pump, and a foam nozzle connected in sequence; the control unit 23 is used to: determine the heating power of the steam generator based on the medium temperature, and control the steam generator to heat the cleaning medium according to the heating power; and / or, determine the rotation speed of the water pump and the foaming pump based on the medium temperature, and control the operation of the water pump and the foaming pump according to the rotation speed, wherein the pump body includes the water pump and the foaming pump.

[0096] Optionally, the control unit 23 is configured to: if the medium temperature is the first temperature, determine the rotation speed of the water pump corresponding to the first temperature as a fourth rotation speed, and determine the rotation speed of the aerating pump corresponding to the first temperature as a fifth rotation speed; if the medium temperature is the second temperature, determine the rotation speed of the water pump corresponding to the second temperature as a sixth rotation speed, and determine the rotation speed of the aerating pump corresponding to the second temperature as zero; if the medium temperature is the third temperature, determine the rotation speed of the water pump corresponding to the third temperature as a seventh rotation speed, and determine the rotation speed of the aerating pump corresponding to the third temperature as an eighth rotation speed; wherein the fourth rotation speed, the sixth rotation speed, and the seventh rotation speed decrease sequentially, and the fifth rotation speed is greater than the eighth rotation speed.

[0097] Optionally, the control unit 23 is further configured to: if it is determined that the cleaning of the range hood is completed, output a prompt message, wherein the prompt message is at least one of a voice prompt or a visual prompt.

[0098] Optionally, the stage determination unit 21 is further configured to: obtain the oil and dirt level of the range hood; if the oil and dirt level is greater than or equal to the dirt level threshold, control the range hood to enter the cleaning state; if a touch operation is detected on the cleaning button of the range hood, control the range hood to enter the cleaning state.

[0099] In this embodiment, when the range hood is in cleaning mode, the temperature of the cleaning medium corresponding to the current cleaning stage is determined. The operation of the steam generator and / or water pump is then controlled based on this temperature, thereby adjusting the mixing ratio of water vapor and cleaning foam in the cleaning medium. This dynamic adjustment of the mixing ratio of water vapor and cleaning foam in the cleaning medium ensures it matches the cleaning target of each cleaning stage of the range hood, allowing the cleaning medium to function optimally in each stage and improving the cleaning effect of the range hood.

[0100] Please refer to Figure 8, which is a structural schematic diagram of a range hood provided in an embodiment of this application. As shown in Figure 8, the range hood 500 includes a processor 501 and a memory 502. The processor 501 and the memory 502 are electrically connected.

[0101] The processor 501 is the control center of the range hood 500 and may include one or more processing cores. The processor 501 connects to various parts of the range hood 500 via various interfaces and lines. It executes various functions and processes data of the range hood 500 by running or calling computer programs stored in the memory 502 and by calling data stored in the memory 502, thereby providing overall control of the range hood 500. Optionally, the processor 501 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 501 may integrate one or more of the following: CPU, Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user page, and applications; the GPU is responsible for rendering and drawing the displayed content; and the modem handles wireless communication. It is understood that the modem may also not be integrated into the processor 501 and may be implemented separately through a communication chip.

[0102] The memory 502 can be used to store software programs and modules. The processor 501 executes various functional applications and data processing by running the computer programs and modules stored in the memory 502. The memory 502 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, computer programs required for at least one function, etc.; the data storage area may store data created based on the use of the range hood 500, etc.

[0103] Furthermore, memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, memory 502 may also include a memory controller to provide processor 501 with access to memory 502.

[0104] In this embodiment, the processor 501 in the range hood 500 loads the instructions corresponding to the processes of one or more computer programs into the memory 502 according to the following steps, and the processor 501 runs the computer programs stored in the memory 502 to realize various functions, as follows: when the range hood is in the cleaning state, the current cleaning stage of the range hood is determined; the medium temperature of the cleaning medium corresponding to the cleaning stage is determined; the operation of the steam generator and / or pump is controlled based on the medium temperature to adjust the mixing ratio of water vapor and detergent foam in the cleaning medium, wherein the higher the medium temperature of the cleaning medium, the lower the mixing ratio of detergent foam in the cleaning medium.

[0105] Optionally, when the processor 501 determines the medium temperature of the cleaning medium corresponding to the cleaning stage, it specifically performs the following: if the cleaning stage is a main wash stage, the medium temperature of the cleaning medium corresponding to the main wash stage is determined to be a first temperature; if the cleaning stage is a rinsing stage, the medium temperature of the cleaning medium corresponding to the cleaning stage is determined to be a second temperature, wherein the first temperature is lower than the second temperature.

[0106] Optionally, when the processor 501 determines the medium temperature of the cleaning medium corresponding to the cleaning stage, it specifically performs the following: if the cleaning stage is a pre-wash stage, the medium temperature of the cleaning medium corresponding to the cleaning stage is determined to be a third temperature, wherein the third temperature is greater than the second temperature.

[0107] Optionally, the processor 501 further performs the following: if the cleaning stage is the main washing stage, then controls the impeller of the range hood to rotate continuously or intermittently at a first operating speed.

[0108] Optionally, after determining the current cleaning stage of the range hood, the processor 501 further performs the following: if the cleaning stage is a drying stage, it shuts down the steam generator and the pump body, and controls the impeller to rotate at a second operating speed.

[0109] Optionally, the range hood includes a liquid storage box, a water pump, a steam generator, and a nozzle processor connected in sequence. When the steam generator and / or pump body are controlled based on the medium temperature, the following specific actions are performed: determining the heating power of the steam generator based on the medium temperature, and controlling the steam generator to heat the cleaning medium according to the heating power; and / or determining the speed of the water pump based on the medium temperature, and controlling the operation of the water pump according to the speed, wherein the pump body is the water pump.

[0110] Optionally, when the processor 501 executes the process of determining the heating power of the steam generator based on the medium temperature, it specifically performs the following: if the medium temperature is the first temperature, then the heating power of the steam generator corresponding to the first temperature is determined to be a first power; if the medium temperature is the second temperature, then the heating power of the steam generator corresponding to the second temperature is determined to be a second power; if the medium temperature is the third temperature, then the heating power of the steam generator corresponding to the third temperature is determined to be a third power, wherein the first power, the second power, and the third power increase sequentially.

[0111] Optionally, when the processor 501 determines the pump speed based on the medium temperature, it specifically performs the following: if the medium temperature is the first temperature, then the pump speed corresponding to the first temperature is determined to be a first speed; if the medium temperature is the second temperature, then the pump speed corresponding to the second temperature is determined to be a second speed; if the medium temperature is the third temperature, then the pump speed corresponding to the third temperature is determined to be a third speed, wherein the first speed, the second speed, and the third speed decrease sequentially.

[0112] Optionally, the range hood includes a water box, a water pump, a steam generator, and a steam nozzle connected in sequence, and a detergent box, a foaming pump, and a foam nozzle connected in sequence. When the processor 501 executes the operation of controlling the steam generator and / or the pump body based on the medium temperature, it specifically performs the following: determining the heating power of the steam generator based on the medium temperature, and controlling the steam generator to heat the cleaning medium according to the heating power; and / or determining the rotation speed of the water pump and the foaming pump based on the medium temperature, and controlling the operation of the water pump and the foaming pump according to the rotation speed, wherein the pump body includes the water pump and the foaming pump.

[0113] Optionally, when the processor 501 determines the rotational speeds of the water pump and the aerator based on the medium temperature, it specifically performs the following: if the medium temperature is the first temperature, then the rotational speed of the water pump corresponding to the first temperature is determined to be a fourth rotational speed, and the rotational speed of the aerator corresponding to the first temperature is determined to be a fifth rotational speed; if the medium temperature is the second temperature, then the rotational speed of the water pump corresponding to the second temperature is determined to be a sixth rotational speed, and the rotational speed of the aerator corresponding to the second temperature is determined to be zero; if the medium temperature is the third temperature, then the rotational speed of the water pump corresponding to the third temperature is determined to be a seventh rotational speed, and the rotational speed of the aerator corresponding to the third temperature is determined to be an eighth rotational speed; wherein the fourth rotational speed, the sixth rotational speed, and the seventh rotational speed decrease sequentially, and the fifth rotational speed is greater than the eighth rotational speed.

[0114] Optionally, after executing the operation of the steam generator and / or pump body based on the medium temperature, the processor 501 further executes: if it is determined that the cleaning of the range hood is completed, it outputs a prompt message, the prompt message being at least one of a voice prompt and a visual prompt.

[0115] Optionally, before determining the current cleaning stage of the range hood, the processor 501 further performs the following: acquiring the oil and dirt level of the range hood; if the oil and dirt level is greater than or equal to a dirt level threshold, controlling the range hood to enter the cleaning state; and if a touch operation is detected on the cleaning button of the range hood, controlling the range hood to enter the cleaning state.

[0116] In this embodiment, when the range hood is in cleaning mode, the temperature of the cleaning medium corresponding to the current cleaning stage is determined. The operation of the steam generator and / or water pump is then controlled based on this temperature, thereby adjusting the mixing ratio of water vapor and cleaning foam in the cleaning medium. This dynamic adjustment of the mixing ratio of water vapor and cleaning foam in the cleaning medium ensures it matches the cleaning target of each cleaning stage of the range hood, allowing the cleaning medium to function optimally in each stage and improving the cleaning effect of the range hood.

[0117] It should be understood that the device provided in this application embodiment is used to perform the above-described cleaning method for a range hood, and therefore can achieve the same effect as the above-described implementation method.

[0118] When using an integrated unit, the device may include a processing module and a storage module. Specifically, when the device is applied to a range hood, the processing module can be used to control and manage the operation of the range hood. The storage module can be used to support the range hood in executing relevant program code.

[0119] The processing module may be a processor or a controller, which can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination of functions that implement computing capabilities, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc., and the storage module may be a memory.

[0120] In addition, the device provided in this application embodiment may specifically be a chip, component or module. The chip may include a connected processor and a memory. The memory is used to store instructions. When the processor calls and executes the instructions, the chip can perform a cleaning method for a range hood provided in the above embodiment.

[0121] This application also provides a computer-readable storage medium storing computer program code. When the computer program code is run on a computer, the computer executes the above-described related method steps to achieve the cleaning method for a range hood provided in the above embodiments.

[0122] This embodiment also provides a computer program product that, when run on a computer, causes the computer to perform the aforementioned steps to achieve the cleaning method for a range hood provided in the above embodiment.

[0123] In this embodiment, the device, computer-readable storage medium, computer program product, or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0124] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0125] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0126] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for cleaning a range hood, characterized in that, The method includes: when the range hood is in a cleaning state, determining the current cleaning stage of the range hood; determining the medium temperature of the cleaning medium corresponding to the cleaning stage; and controlling the operation of a steam generator and / or a pump body based on the medium temperature to adjust the mixing ratio of water vapor and detergent foam in the cleaning medium, wherein the higher the medium temperature of the cleaning medium, the lower the mixing ratio of detergent foam in the cleaning medium.

2. The method according to claim 1, characterized in that, The step of determining the medium temperature of the cleaning medium corresponding to the cleaning stage includes: if the cleaning stage is a main wash stage, then determining the medium temperature of the cleaning medium corresponding to the main wash stage as a first temperature; if the cleaning stage is a rinsing stage, then determining the medium temperature of the cleaning medium corresponding to the cleaning stage as a second temperature, wherein the first temperature is lower than the second temperature.

3. The method according to claim 2, characterized in that, The step of determining the medium temperature of the cleaning medium corresponding to the cleaning stage includes: if the cleaning stage is a pre-wash stage, then determining the medium temperature of the cleaning medium corresponding to the cleaning stage as a third temperature, wherein the third temperature is greater than the second temperature.

4. The method according to claim 2, characterized in that, The method further includes: if the cleaning stage is the main washing stage, then controlling the impeller of the range hood to rotate continuously or intermittently at a first operating speed.

5. The method according to claim 4, characterized in that, After determining the current cleaning stage of the range hood, the method further includes: if the cleaning stage is the drying stage, then turning off the steam generator and the pump body, and controlling the impeller to rotate at the second operating speed.

6. The method according to claim 3, characterized in that, The range hood includes a liquid storage box, a water pump, a steam generator, and nozzles connected in sequence. The operation of the steam generator and / or the pump body based on the medium temperature includes: determining the heating power of the steam generator based on the medium temperature, and controlling the steam generator to heat the cleaning medium according to the heating power; and / or determining the speed of the water pump based on the medium temperature, and controlling the operation of the water pump according to the speed, wherein the pump body is the water pump.

7. The method according to claim 6, characterized in that, The step of determining the heating power of the steam generator based on the medium temperature includes: if the medium temperature is the first temperature, then determining the heating power of the steam generator corresponding to the first temperature as a first power; if the medium temperature is the second temperature, then determining the heating power of the steam generator corresponding to the second temperature as a second power; if the medium temperature is the third temperature, then determining the heating power of the steam generator corresponding to the third temperature as a third power, wherein the first power, the second power, and the third power increase sequentially.

8. The method according to claim 6, characterized in that, The step of determining the pump speed based on the medium temperature includes: if the medium temperature is the first temperature, then determining the pump speed corresponding to the first temperature as a first speed; if the medium temperature is the second temperature, then determining the pump speed corresponding to the second temperature as a second speed; if the medium temperature is the third temperature, then determining the pump speed corresponding to the third temperature as a third speed, wherein the first speed, the second speed, and the third speed decrease sequentially.

9. The method according to claim 3, characterized in that, The range hood includes a water box, a water pump, a steam generator, and a steam nozzle connected in sequence, and a detergent box, a foaming pump, and a foam nozzle connected in sequence. The operation of the steam generator and / or the pump body based on the medium temperature includes: determining the heating power of the steam generator based on the medium temperature, and controlling the steam generator to heat the cleaning medium according to the heating power; and / or, determining the rotational speed of the water pump and the foaming pump based on the medium temperature, and controlling the operation of the water pump and the foaming pump according to the rotational speed, wherein the pump body includes the water pump and the foaming pump.

10. The method according to claim 9, characterized in that, The step of determining the rotational speeds of the water pump and the aerator based on the medium temperature includes: if the medium temperature is the first temperature, then determining the rotational speed of the water pump corresponding to the first temperature as a fourth rotational speed and the rotational speed of the aerator corresponding to the first temperature as a fifth rotational speed; if the medium temperature is the second temperature, then determining the rotational speed of the water pump corresponding to the second temperature as a sixth rotational speed and the rotational speed of the aerator corresponding to the second temperature as zero; if the medium temperature is the third temperature, then determining the rotational speed of the water pump corresponding to the third temperature as a seventh rotational speed and the rotational speed of the aerator corresponding to the third temperature as an eighth rotational speed; wherein the fourth rotational speed, the sixth rotational speed, and the seventh rotational speed decrease sequentially, and the fifth rotational speed is greater than the eighth rotational speed.

11. The method according to any one of claims 1-10, characterized in that, After controlling the operation of the steam generator and / or pump body based on the medium temperature, the method further includes: if it is determined that the cleaning of the range hood is completed, outputting a prompt message, wherein the prompt message is at least one of voice prompt and visual prompt.

12. The method according to any one of claims 1-10, characterized in that, Before determining the current cleaning stage of the range hood, at least one of the following is included: obtaining the oil and dirt level of the range hood; if the oil and dirt level is greater than or equal to a dirt level threshold, controlling the range hood to enter the cleaning state; if a touch operation is detected on the cleaning button of the range hood, controlling the range hood to enter the cleaning state.

13. A cleaning device for a range hood, characterized in that, The device includes: a stage determination unit, used to determine the current cleaning stage of the range hood when the range hood is in a cleaning state; a temperature determination unit, used to determine the medium temperature of the cleaning medium corresponding to the cleaning stage; and a control unit, used to control the operation of the steam generator and / or the pump body based on the medium temperature to adjust the mixing ratio of water vapor and detergent foam in the cleaning medium, wherein the higher the medium temperature of the cleaning medium, the lower the mixing ratio of detergent foam in the cleaning medium.

14. A range hood, characterized in that, The range hood includes: a memory for storing executable program code; and a processor for calling and running the executable program code from the memory, causing the range hood to perform the method as described in any one of claims 1 to 12.

15. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program code that, when executed, implements the method as described in any one of claims 1 to 12.

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