Fan cleaning device, refrigeration range hood and fan cleaning control method

Abstract

This application relates to a fan cleaning device, a refrigerated range hood, and a fan cleaning control method. The fan cleaning device includes a cleaning solution preparation device, a water collection assembly connected to the cleaning solution preparation device, and a storage box for storing the cleaning solute. The cleaning solution preparation device is connected to the fan of an external refrigerated range hood. The water collection assembly is located below the evaporator of the refrigerated range hood. The cleaning solution preparation device is used to mix condensate and the cleaning solute according to a preset mixing ratio to prepare the cleaning solution. The mixing ratio of condensate and the cleaning solute is determined based on the degree of dirtiness of the fan, which is determined based on the fan's vibration spectrum data. Water vapor in the air condenses upon encountering the evaporator in refrigeration mode, forming condensate. The condensate flows to the water collection assembly under gravity. Using the above-mentioned fan cleaning device can improve the cleaning efficiency of the fan.

Description

Technical Field

[0001] This application relates to the field of smoke machine cleaning technology, and in particular to a fan cleaning device, a refrigerated smoke machine, a fan cleaning control method, an apparatus, a computer device, a computer-readable storage medium, and a computer program product. Background Technology

[0002] When a range hood is working, it draws in cooking fumes, which contain a lot of grease, food residue, and dust. Long-term accumulation of grease not only affects the appearance of the range hood but also reduces its smoke extraction efficiency. Therefore, range hoods need to be cleaned after a period of use.

[0003] Traditional range hoods have an oil box inside that can store most of the grease. Users only need to empty the oil box periodically. As for the range hood's fan, it often requires manual disassembly of parts such as the filter and fan blades to clean it.

[0004] However, the above-mentioned fan cleaning and control methods rely too much on manual disassembly and cleaning, which may damage the range hood during the disassembly process. In addition, it takes a lot of time for users to manually wipe and soak the oily parts, which makes the traditional fan cleaning and control methods inefficient. Summary of the Invention

[0005] Therefore, it is necessary to provide a fan cleaning device, a refrigerated range hood, a fan cleaning control method, a computer device, and a computer-readable storage medium that can improve cleaning efficiency in response to the above-mentioned technical problems.

[0006] In a first aspect, this application provides a fan cleaning device, the device including a cleaning solution preparation device, a water collection component connected to the cleaning solution preparation device, and a storage box for storing cleaning solutes, the cleaning solution preparation device being connected to the fan of an external refrigeration range hood, and the water collection component being disposed below the evaporator of the refrigeration range hood;

[0007] The cleaning solution preparation device is used to prepare a cleaning solution by mixing condensate and the cleaning solute according to a preset mixing ratio. The mixing ratio of condensate and the cleaning solute is determined according to the degree of dirtiness of the fan. The degree of dirtiness of the fan is determined according to the vibration spectrum data of the fan. The condensate is formed by the condensation of water vapor in the air when it encounters the evaporator in the cooling mode. The condensate flows to the water collection component under the action of gravity.

[0008] In one embodiment, the cleaning solution preparation device includes a first outlet and a second outlet;

[0009] The first outlet is connected to the fan through the first spray pipe, and the cleaning solution in the cleaning solution preparation device is sprayed to the fan through the first spray pipe to clean the fan;

[0010] The second outlet is connected to the second spray pipe. The distance between one end of the second spray pipe and the condenser is less than a preset distance threshold. The condensate in the water collection assembly is sprayed through the second spray pipe of the cleaning solution preparation device to the outside of the condenser in the cooling mode to evaporate the condensate.

[0011] In one embodiment, the water collection assembly includes a first water collection tank and a second water collection tank that are connected to each other. The second water collection tank is connected to the cleaning solution preparation device. The first water collection tank is located below the evaporator and is positioned higher than the second water collection tank.

[0012] Water vapor in the air condenses into condensate when it encounters an evaporator in cooling mode. The condensate then enters the first water collection tank under the influence of gravity, and the condensate in the first water collection tank enters the second water collection tank under the influence of gravity.

[0013] Secondly, this application also provides a refrigerated range hood, which includes a controller, a range hood assembly, an evaporator, a condenser, and a fan cleaning device as described in any of the above embodiments, all connected to the controller.

[0014] The controller is configured to: respond to a cooling command, control the evaporator and condenser to enter a cooling mode; when it is determined that the fan needs cleaning and the water level of the water collection component is higher than a preset water level threshold, control the condensate in the water collection component and the cleaning solute in the storage box to flow into the cleaning solution preparation device according to a preset mixing ratio, mix in the cleaning solution preparation device to form a cleaning solution, and the cleaning solution enters the fan to clean the fan; and when it is determined that the fan does not need cleaning and the water level of the water collection component is higher than a preset water level threshold, control the condensate in the water collection component to enter the cleaning solution preparation device and spray it onto the outside of the condenser in cooling mode to evaporate the condensate, wherein the mixing ratio of the condensate and the cleaning solute is determined according to the degree of dirtiness of the fan, and the degree of dirtiness of the fan is determined according to the vibration spectrum data of the fan.

[0015] Thirdly, this application also provides a fan cleaning control method, which is applied to the refrigeration range hood as described in the above embodiments, and the method includes:

[0016] In response to the user's cooling command, the evaporator and condenser are controlled to enter cooling mode;

[0017] Obtain vibration spectrum data of the fan in the range hood assembly;

[0018] Based on the vibration spectrum data, determine whether the fan needs cleaning;

[0019] When it is determined that the fan needs to be cleaned and the water level of the water collection component is higher than the preset water level threshold, the condensate in the water collection component and the cleaning solute in the storage box are controlled to enter the cleaning solution preparation device according to the preset mixing ratio, and the cleaning solution is mixed in the cleaning solution preparation device to form a cleaning solution.

[0020] The cleaning solution in the cleaning solution preparation device is controlled to enter the blower to clean the blower.

[0021] Fourthly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described embodiments of the fan cleaning control method.

[0022] Fifthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the above-described fan cleaning control method embodiments.

[0023] The aforementioned fan cleaning device includes a cleaning solution preparation device, a water collection component connected to the cleaning solution preparation device, and a storage box for storing cleaning solutes. The cleaning solution preparation device is connected to the fan, and the water collection component is located below the evaporator. Water vapor in the air condenses into condensate when it encounters the evaporator in cooling mode. The condensate flows to the water collection component under gravity. The condensate and cleaning solutes can be mixed in the cleaning solution preparation device according to a preset mixing ratio to form a cleaning solution. The cleaning solution is used to clean the fan. This method can make reasonable use of condensate, an environmentally friendly resource, to clean the fan, reducing dependence on external water resources and solving the impact of condensate scaling. It also realizes the intelligent, precise, and efficient cleaning process.

[0024] The aforementioned cooling range hood and fan cleaning control method, computer equipment, and computer-readable storage medium, in response to a cooling command, control the evaporator and condenser to enter a cooling mode to facilitate the subsequent collection of condensate to prepare a cleaning solution. By acquiring the vibration spectrum data of the range hood components, and considering the differences in vibration states between normal operation and oil accumulation, the method can accurately determine whether the range hood components need cleaning. When it is determined that the range hood components need cleaning and the water level in the water collection component is higher than a preset water level threshold, the method controls the condensate in the water collection component and the cleaning solute in the storage box to enter the cleaning solution preparation device according to a preset mixing ratio. The cleaning solution is then mixed in the cleaning solution preparation device to form a cleaning solution, which is then controlled to enter the fan to clean the fan. This method can rationally utilize condensate, an environmentally friendly resource, to clean the fan, reducing dependence on external water resources and solving the impact of condensate scaling, thus achieving intelligent, precise, and efficient cleaning processes. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural block diagram of a fan cleaning device in one embodiment;

[0027] Figure 2 This is a structural block diagram of the fan cleaning device in another embodiment;

[0028] Figure 3 This is a structural block diagram of the fan cleaning device in a detailed embodiment;

[0029] Figure 4 This is a structural block diagram of a refrigerated range hood in one embodiment;

[0030] Figure 5 This is a flowchart illustrating a fan cleaning control method in one embodiment;

[0031] Figure 6 This is a flowchart illustrating the fan cleaning control method in another embodiment;

[0032] Figure 7 This is a structural block diagram of a fan cleaning control device in one embodiment;

[0033] Figure 8 This is an internal structural diagram of a computer device in one embodiment.

[0034] Explanation of reference numerals in the attached drawings: 110, cleaning solution preparation device; 111, first spray pipe; 112, second spray pipe; 120, water collection assembly; 121, first water collection tank; 122, second water collection tank; 210, smoke hood assembly; 220, evaporator; 230, condenser; 240, controller. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0036] In one exemplary embodiment, such as Figure 1 As shown, this application provides a fan cleaning device 100, which includes a cleaning solution preparation device 110, a water collection assembly 120 connected to the cleaning solution preparation device 110, and a storage box (not shown) for storing cleaning solute. The cleaning solution preparation device 110 is connected to the fan of an external refrigerated range hood, and the water collection assembly 120 is located below the evaporator of the refrigerated range hood. The cleaning solution preparation device 110 is used to store a cleaning solution formed by mixing condensate and cleaning solute according to a preset mixing ratio. The condensate is formed by water vapor in the air condensing when it encounters the evaporator in refrigeration mode, and the condensate flows to the water collection assembly 120 under the action of gravity.

[0037] To facilitate the explanation of this application, this embodiment and the following embodiments use the application of the fan cleaning device 100 in a refrigeration range hood as an example for description. It is understood that the fan cleaning device 100 may include an independent controller (not shown in the figure) or may share a controller with the refrigeration range hood. Exemplarily, when the controller determines that the fan needs to be cleaned and the water level of the water collection component 120 is higher than a preset water level threshold, the condensate in the water collection component 120 and the cleaning solute in the storage box enter the cleaning solution preparation device 110 according to a preset mixing ratio, mix in the cleaning solution preparation device 110 to form a cleaning solution, and the cleaning solution enters the fan to clean the fan.

[0038] The cleaning solution preparation device 110 provides a place to mix the cleaning solute with the condensate provided by the water collection component 120. Its internal components may include stirring and metering components to prepare the cleaning solution according to a specific ratio. The water collection component 120 is used to collect the condensate generated by the evaporator. It is located below the evaporator and can be a drainage channel or a collection tank, guiding the condensate into the water collection component 120 under gravity to provide a water source for cleaning solution preparation. A storage box (not shown in the figure) can be located outside or inside the cleaning solution preparation device 110. It stores the cleaning solute and, under specific conditions, inputs it into the cleaning solution preparation device 110. Different cleaning solutes correspond to different cleaning effects, and the mixing ratio of cleaning solute and condensate can be flexibly determined according to different degrees of dirt. For example, if the fan is heavily dirty, the proportion of cleaning solute can be increased to enhance the cleaning effect. Specifically, the concentration of the cleaning solute can be increased by extending the time and flow rate of the cleaning solute into the cleaning solution preparation device. Alternatively, the concentration can be increased by increasing the number of times the cleaning solute is output during the cleaning solution preparation process. For example, the single-pass flow rates of the cleaning solute and condensate can be preset. If the fan is lightly dirty, the number of times the cleaning solute is output is set to one; if the fan is moderately dirty, the number of times the cleaning solute is output is set to two, and so on. It is understood that while increasing the output of the cleaning solute, the output of condensate can also be appropriately increased to prepare a cleaning solution of appropriate concentration, as long as the cleaning power of the cleaning solution is improved. In other embodiments, other methods can also be used to improve the cleaning effect of the cleaning solution.

[0039] Specifically, the degree of dirtiness of the fan can be determined based on its vibration spectrum data, and the mixing ratio of cleaning solute and condensate can be flexibly adjusted accordingly. Since fans with different degrees of dirtiness exhibit different vibration frequencies and noise amplitudes during operation, vibration spectrum data of fans under different degrees of dirtiness can be collected in advance. For example, vibration spectrum data can be collected for clean, lightly dirty, moderately dirty, and heavily dirty conditions. By analyzing the vibration spectrum data under different degrees of dirtiness, threshold values ​​for characteristic data corresponding to different degrees of dirtiness can be determined, such as vibration frequency thresholds or noise amplitude thresholds. This establishes a correspondence between spectrum data and degree of dirtiness, as well as a correspondence between degree of dirtiness and the mixing ratio of cleaning solute and condensate.

[0040] In the subsequent process of determining the degree of dirtiness, characteristic data such as vibration frequency and noise amplitude of the real-time collected vibration spectrum data can be extracted. The extracted vibration frequency and noise amplitude are compared with the corresponding judgment thresholds. If the vibration frequency reaches a certain vibration frequency threshold or the noise amplitude in the vibration spectrum data reaches a certain noise amplitude threshold, it can be determined that the fan needs to be cleaned and the degree of dirtiness of the fan can be determined. Based on the degree of dirtiness of the fan, the mixing ratio of cleaning solute and condensate is determined.

[0041] In other implementations, the model can be based on collecting vibration spectrum data of the fan under clean, lightly dirty, moderately dirty, and heavily dirty conditions. By analyzing the vibration spectrum data under different levels of dirtiness, vibration spectrum feature data for judging the degree of dirtiness can be extracted, such as vibration frequency, noise amplitude, power frequency amplitude ratio, and high-frequency energy proportion. Subsequently, dirtiness level labels are added to the extracted vibration spectrum feature data. Then, a machine learning model, deep learning model, or vector machine classification model is trained based on the labeled vibration spectrum feature data to obtain a dirtiness level classification model. The model outputs labels: 0 = clean, 1 = lightly dirty, 2 = moderately dirty, and 3 = heavily dirty. It is understood that other methods and other types of models can also be used to train a dirtiness level classification model capable of identifying the degree of dirtiness; no specific limitations are made here.

[0042] In this embodiment, if the fan to be cleaned is the fan in a range hood, the cleaning solute can be sodium bicarbonate (baking soda). When preparing the cleaning solution, sodium bicarbonate can be added to the cleaning solution preparation device 110 and mixed in a ratio of sodium bicarbonate to water of 1:3.

[0043] The evaporator and condenser are refrigeration components. In refrigeration mode, the refrigerant inside the evaporator evaporates under low pressure, changing from a liquid to a gaseous state. This process absorbs a large amount of heat, causing the surface temperature of the evaporator to drop. Water vapor in the air comes into contact with the cold evaporator surface and condenses into water droplets, forming condensate. In the humid climate of southern China, this condensate is wastewater and normally needs to be drained. This embodiment proposes a method to use the condensate to clean the fan, eliminating the need for manual water addition and freeing up the user's time. The water level threshold is a pre-set standard that determines whether the water level in the water collection component 120 meets the conditions for preparing the cleaning solution. The cleaning solution preparation process is triggered only when the water level in the water collection component 120 is higher than this threshold. To reduce condensate accumulation in the water collection component 120, the water level threshold can be set relatively low to reduce the difficulty of triggering the preparation of the cleaning solution and accelerate wastewater utilization.

[0044] Specifically, the fan can include a impeller and a volute. Taking a range hood as an example, the impeller and volute may accumulate a lot of grease after prolonged use and require regular cleaning. The evaporator and condenser can be refrigeration components in a cooling range hood, or they can be evaporators and condensers in other devices. When water vapor in the air encounters an evaporator in cooling mode, it condenses due to the low surface temperature of the evaporator, changing from a gaseous state to a liquid state to form condensate. According to the principle of gravity, the condensate flows downwards, and the water collection component 120, located below the evaporator, can effectively collect this condensate, completing the water collection process. Then, during the operation of the fan, a specific detection mechanism can determine whether the fan needs cleaning. For example, it can collect vibration data of the fan during operation. The vibration data produced by a fan with grease and a clean fan are different, such as vibration amplitude and vibration spectrum. When the fan is determined to need cleaning based on the vibration data, and the water level in the water collection component 120 is detected to be higher than a preset water level threshold, the cleaning solution preparation process will be triggered.

[0045] At this time, the condensate in the water collection component 120 can enter the cleaning solution preparation device 110 through a specific driving method, such as gravity flow combined with valve control. At the same time, the cleaning solute stored in the storage box will also enter the cleaning solution preparation device 110 according to the preset mixing ratio. Inside the cleaning solution preparation device 110, through stirring, mixing and other operations, the condensate and the cleaning solute are fully mixed to finally form a cleaning solution with cleaning ability.

[0046] The prepared cleaning solution can be delivered into the fan through a specific channel, such as a spray pipe. Utilizing the chemical and physical properties of the cleaning solution, it cleans various components inside the fan, such as the impeller, volute, blades, and ductwork, removing dust, dirt, and other impurities accumulated during the fan's operation, thereby achieving the purpose of cleaning the fan.

[0047] The aforementioned fan cleaning device includes a cleaning solution preparation device, a water collection component connected to the cleaning solution preparation device, and a storage box for storing cleaning solutes. The cleaning solution preparation device is connected to the fan, and the water collection component is located below the evaporator. Water vapor in the air condenses into condensate when it encounters the evaporator in cooling mode. The condensate flows to the water collection component under gravity. The condensate and cleaning solutes can be mixed in the cleaning solution preparation device according to a preset mixing ratio to form a cleaning solution. The cleaning solution is used to clean the fan. This method can make reasonable use of condensate, an environmentally friendly resource, to clean the fan, reducing dependence on external water resources and solving the impact of condensate scaling. It also realizes the intelligent, precise, and efficient cleaning process.

[0048] In one exemplary embodiment, such as Figure 2As shown, the cleaning solution preparation device 110 includes a first outlet, a second outlet, a first spray pipe, and a second spray pipe. The first outlet is connected to a fan through the first spray pipe 111. The cleaning solution in the cleaning solution preparation device is sprayed to the fan through the first spray pipe 111 to clean the fan. The second outlet is connected to the second spray pipe 112. The distance between the other end of the second spray pipe 112 and the condenser is less than a preset distance threshold. The condensate in the water collection assembly 120 enters the cleaning solution preparation device 110 and is sprayed to the outside of the condenser in the cooling mode through the second spray pipe to evaporate the condensate.

[0049] The cleaning solution in the cleaning solution preparation device 110 can be sprayed onto the fan via the first outlet and the first spray pipe 111, providing a cleaning medium for the fan cleaning operation. The second outlet of the cleaning solution preparation device 110 is connected to another output channel, which is connected to the second spray pipe 112. This outlet is mainly used to transport liquid (condensate or cleaning solution) to the outside of the condenser under specific conditions, utilizing the high external temperature environment during condenser cooling to promote liquid evaporation. The preset distance threshold is a pre-set distance parameter used to measure the spatial distance between the end of the second spray pipe 112 and the condenser. Generally, the end of the second spray pipe 112 needs to be located near the condenser to effectively utilize the high external temperature environment during condenser cooling to promote liquid evaporation.

[0050] For example, when the controller determines that the fan does not need cleaning, and the water level in the water collection assembly 120 is higher than a preset water level threshold, in order to prevent excessive condensate buildup in the water collection assembly 120, the condensate in the water collection assembly 120 will enter the cleaning solution preparation device 110. At this time, the cleaning solution preparation device 110 does not perform the mixing operation of the cleaning solute and the condensate, but directly introduces the condensate into the second spray pipe 112 through the second outlet. Since the distance between the other end of the second spray pipe 112 and the condenser is less than a preset distance threshold, when the condensate is sprayed through the second spray pipe 112 to the outside of the condenser in cooling mode, the high temperature on the surface of the condenser will cause the condensate to evaporate, discharging the condensate into the environment in gaseous form. This achieves the treatment of excess condensate in the water collection assembly 120 and can reduce the adverse effects of condensate accumulation and scaling over a long period of time.

[0051] It is understandable that in some other embodiments, the water level of the water collection component 120 being higher than the preset water level threshold may not be a necessary condition. For example, during the humid season in southern China, indoor humidity can reach over 95%. At this time, the water collection component 120 can collect more condensate in the same amount of time. If it is determined that the fan does not need cleaning, then even if the water level of the water collection component 120 does not reach the preset water level threshold, this part of the condensate can still be prevented from being sprayed near the condenser and evaporated.

[0052] When it is determined that the fan needs cleaning, the cleaning solution preparation device 110 will mix the condensate in the water collection component 120 with the cleaning solute in the storage box to prepare a cleaning solution according to the preset process. The prepared cleaning solution enters the first spray pipe 111 through the first outlet and is finally sprayed onto the fan component through the first spray pipe 111. The cleaning solution is used to clean the fan and remove dirt and impurities inside the fan.

[0053] In this embodiment, by setting a first outlet and a second outlet, the cleaning solution preparation device has two different working modes. It can clean the fan and treat the condensate in the water collection component when the fan does not need to be cleaned. The condensate is evaporated by the high temperature environment on the surface of the condenser during cooling, without the need for additional heating or drainage equipment, which reduces equipment cost and energy consumption. At the same time, it can effectively prevent overflow problems that may be caused by excessive water level in the water collection component.

[0054] In one exemplary embodiment, such as Figure 3 As shown, the water collection assembly 120 includes a first water collection tank 121 and a second water collection tank 122 connected together. The second water collection tank 122 is connected to the cleaning solution preparation device. The first water collection tank 121 is located below the evaporator and is positioned higher than the second water collection tank. Water vapor in the air condenses when it encounters the evaporator in cooling mode to form condensate. The condensate enters the first water collection tank under the action of gravity, and the condensate in the first water collection tank enters and is stored in the second water collection tank under the action of gravity.

[0055] The water collection assembly 120 consists of a first water collection tank 121 and a second water collection tank 122 connected together. It is used to collect and store condensate generated by the evaporator and to provide a water source for the cleaning solution preparation device 110. The first water collection tank 121 is located below the evaporator and directly receives condensate formed on the evaporator surface due to water vapor condensation. The second water collection tank 122 is connected to the first water collection tank 121 and positioned relatively lower. It stores condensate entering from the first water collection tank 121 and is also connected to the cleaning solution preparation device 110, supplying condensate to it to prepare a cleaning solution when certain conditions are met. The drainage channel connecting the second water collection tank 122 and the first water collection tank 121 can have a certain slope to facilitate the smooth flow of condensate.

[0056] For example, when the evaporator is in cooling mode, water vapor in the surrounding air exchanges heat with the cooler evaporator surface, releasing heat and changing from a gaseous state to a liquid state, forming condensate. Based on gravity, the condensate flows downwards, and the first water collection tank 121, located directly below the evaporator, can collect this condensate, completing the initial collection. Since the first water collection tank 121 is higher than the second water collection tank 122, under the continuous action of gravity, the condensate collected in the first water collection tank 121 will naturally flow to the second water collection tank 122. The second water collection tank 122 acts as a storage container, storing the incoming condensate and providing a stable water source for the subsequent preparation of the cleaning solution. When the fan needs cleaning and the water level in the second water collection tank 122 is higher than a preset threshold, the condensate in the second water collection tank 122 will enter the cleaning solution preparation device 110, where it will mix with the cleaning solute to prepare the cleaning solution.

[0057] In this embodiment, the first water collection tank is located below the evaporator, which can directly and efficiently collect the condensate produced by the evaporator, reduce condensate loss, and improve water resource collection efficiency. Utilizing the height difference between the first and second water collection tanks, gravity is used to automatically guide the condensate from the first to the second water collection tank without the need for additional power equipment, thus reducing energy consumption and cost. The second water collection tank stores the condensate, reducing the impact of intermittent or unstable condensate on the preparation of the cleaning solution. This ensures that sufficient condensate can be provided to the cleaning solution preparation device in a timely manner when cleaning conditions are met, guaranteeing the smooth operation of the fan cleaning process.

[0058] In one exemplary embodiment, such as Figure 4 As shown, a cooling range hood 200 is provided, including a range hood assembly 210, an evaporator 220, a condenser 230, and a fan cleaning device 100 as described in any of the above embodiments, as well as a controller 240 (some connection relationships are not shown in the figure) connected to the range hood assembly 210, the evaporator 220, the condenser 230, and the fan cleaning device 100. The fan cleaning device 100 is used to clean the fan in the range hood assembly 210.

[0059] The controller 240 is configured to: respond to a cooling command, control the evaporator and condenser to enter a cooling mode; when it is determined that the fan needs to be cleaned and the water level of the water collection component is higher than a preset water level threshold, control the condensate in the water collection component and the cleaning solute in the storage box to flow into a cleaning solution preparation device according to a preset mixing ratio, mix in the cleaning solution preparation device to form a cleaning solution, and enter the fan to clean the fan; and when it is determined that the fan does not need to be cleaned and the water level of the water collection component is higher than a preset water level threshold, control the condensate in the water collection component to enter the cleaning solution preparation device and spray it onto the outside of the condenser in the cooling mode to evaporate the condensate.

[0060] The refrigerated range hood 200 is a device integrating multiple functional components such as the range hood assembly 210, evaporator 220, condenser 230, and fan cleaning device 100. It can perform both smoke extraction and cooling functions, and the fan cleaning device 100 cleans the fan in the range hood assembly 210. The fan in the range hood assembly 210 is used for smoke extraction, driving away fumes and other gases generated in the kitchen outdoors. Therefore, the fan may accumulate grease during operation, which the fan cleaning device 100 can clean. The evaporator 220 absorbs heat through the evaporation of refrigerant, lowering the ambient temperature. Simultaneously, it causes water vapor in the air to condense, providing a water source for the water collection assembly 120 in the fan cleaning device 100. The condenser 230 works in conjunction with the evaporator 220. In the refrigeration cycle, the high-temperature, high-pressure gaseous refrigerant exiting the evaporator 220 is cooled and liquefied, releasing heat. The high-temperature condenser 230 can then evaporate the sprayed condensate. The fan cleaning device 100 includes components such as a cleaning solution preparation device 110 and a water collection assembly 120. It can use the condensate generated by the evaporator 220 to prepare a cleaning solution for automatically cleaning the fan in the smoke hood assembly 210. Under specific conditions, it can also use the condenser 230 to treat excess condensate.

[0061] For example, when the cooling range hood 200 is running, the fan in the range hood assembly 210 starts, drawing in fumes and other gases generated in the kitchen and expelling them outdoors, thus achieving basic smoke extraction. During the operation of the cooling system of the cooling range hood 200, the evaporator 220 is in cooling mode. Water vapor in the surrounding air condenses on its surface to form condensate. This condensate is collected by the first water collection tank 121 in the fan cleaning device 100 and enters the second water collection tank 122 for storage under gravity. When the controller 240 determines that the fan in the range hood assembly 210 needs cleaning and the water level in the second water collection tank 122 is higher than a preset threshold, the condensate in the second water collection tank 122 and the cleaning solute in the storage box enter the cleaning solution preparation device 110 in a preset ratio to mix and form a cleaning solution. The cleaning solution is sprayed from the first outlet of the cleaning solution preparation device 110 through the first spray pipe 111 to the fan in the smoke hood assembly 210, cleaning the fan and removing accumulated oil and other impurities from its surface and interior, thus restoring the fan's smoke exhaust efficiency. When the controller 240 determines that the fan does not need cleaning, but the water level in the second water collection tank 122 is higher than a preset threshold, the condensate in the second water collection tank 122 enters the cleaning solution preparation device 110, then enters the second spray pipe 112 through the second outlet, and is sprayed onto the outside of the condenser 230, which is in cooling mode. The high temperature on the surface of the condenser 230 evaporates the condensate, thus treating excess condensate.

[0062] The refrigerated range hood in this embodiment integrates the smoke exhaust function of the range hood, the cooling function of the refrigeration system, and the automatic fan cleaning function into one unit, meeting the user's various needs for smoke exhaust, cooling, and cleaning in the kitchen environment. The fan cleaning device can automatically clean the fan in the range hood components, effectively removing oil and other dirt from the fan, enabling the range hood components to operate stably and efficiently for a long time, and extending the service life of the refrigerated range hood.

[0063] In one exemplary embodiment, the range hood assembly 210 shares an air duct with the condenser 230.

[0064] In this process, the range hood assembly 210 and the condenser 230 share the same air circulation channel, and the air duct can simultaneously meet the airflow requirements of the range hood exhaust and the condenser heat dissipation (or cooling).

[0065] For example, when the range hood assembly 210 is running, the fan starts to generate suction, and the oily fumes in the kitchen enter the common air duct through the air inlet. The air duct is equipped with a guide structure (such as baffles, guide vanes, etc.) to guide the oily fumes towards the range hood exhaust outlet, and finally exhaust the fumes outdoors. At this time, the condenser 230 can be in a non-operating state or an auxiliary heat dissipation state, and the airflow in the common air duct mainly serves the exhaust of the range hood. When the refrigeration system is started and the condenser 230 needs to dissipate heat (or cool), the air duct can also be used. However, at this time, the guide structure in the air duct may need to be adjusted in position or angle to change the airflow path.

[0066] In this embodiment, the shared air duct reduces the need for independent air ducts, lowers the overall size and weight of the refrigerated range hood, and can also effectively reduce material costs and improve the working efficiency of the refrigerated range hood.

[0067] In one exemplary embodiment, such as Figure 5 As shown, a fan cleaning control method is provided, applied to the controller of the refrigeration range hood as described in the above embodiment. The method includes the following steps:

[0068] The S100, in response to the user's cooling command, controls the evaporator and condenser to enter cooling mode.

[0069] The cooling command can be a signal input by the user via an operation panel, remote control terminal, or intelligent voice to activate the cooling function, including parameters such as cooling mode selection and temperature setting. The evaporator is a heat exchange component in the refrigeration system that cools the surrounding air by absorbing heat through refrigerant evaporation. In cooling mode, its surface temperature is low, which promotes the condensation of external water vapor. The condenser is a heat exchange component in the refrigeration system that works in conjunction with the evaporator. It releases heat through refrigerant condensation, and in cooling mode, its surface temperature is high, which promotes the evaporation of external water.

[0070] Specifically, when a user issues a cooling command, such as through a touchscreen operation on the range hood's interface or via a remote terminal connected to the range hood (e.g., the user's mobile phone), the control system (e.g., a PLC or microcontroller) receives and executes the cooling command, controlling the evaporator and condenser to enter cooling mode. In cooling mode, the refrigerant is transformed into a high-temperature, high-pressure gas by the compressor, enters the condenser to dissipate heat and liquefy, and then passes through the expansion valve to reduce pressure and temperature before entering the evaporator. Inside the evaporator, it evaporates and absorbs heat, lowering the surface temperature. At this time, the outside of the evaporator is at a low temperature, providing conditions for subsequent condensate formation.

[0071] S200: Obtain the vibration spectrum data of the fan in the smoke hood assembly.

[0072] Among them, vibration spectrum data is the vibration amplitude distribution data of each frequency component when the fan is running, which reflects the operating status of the mechanical components of the fan. Vibration sensors can be installed at the impeller or volute of the fan in the smoke fan assembly to collect the vibration spectrum data of the fan.

[0073] Specifically, during the operation of the fan, the vibration sensor collects the vibration signal of the fan casing in real time. After preprocessing such as amplification and filtering, the vibration signal is transmitted to the control system of the refrigeration fan. The control system performs Fourier transform and other methods on the vibration signal to convert the time-domain vibration signal into frequency-domain spectrum data, thereby obtaining the vibration spectrum data of the fan.

[0074] The S300 determines whether the fan needs cleaning based on vibration spectrum data.

[0075] Following the steps above, vibration spectrum data generated by the fan during operation under different levels of dirt can be pre-stored. This data can serve as the basis for determining whether the fan needs cleaning, for example, in clean, lightly dirty, and heavily dirty conditions. For instance, fans with different levels of dirt will exhibit different vibration frequencies and noise amplitudes during operation. Therefore, a pre-set vibration frequency threshold or noise amplitude threshold can be set. When the vibration frequency in the vibration spectrum data reaches the threshold, or the noise amplitude in the vibration spectrum data reaches the preset noise amplitude threshold, it can be determined that the fan needs cleaning.

[0076] S400, when it is determined that the fan needs to be cleaned and the water level of the water collection component is higher than the preset water level threshold, controls the condensate in the water collection component and the cleaning solute in the storage box to enter the cleaning solution preparation device according to the preset mixing ratio.

[0077] The water level threshold is a pre-set minimum effective water level for the water collection component, such as 60% of the component's height, to ensure sufficient water for preparing the cleaning solution. If the fan is prone to getting dirty and requires frequent cleaning, or if the climate is dry and condensate collection is slow, the water level threshold can be set lower, such as 40% of the collection component's height. The mixing ratio can be the volume or mass ratio of condensate to the cleaning solute, for example, preparing the cleaning solution using a sodium bicarbonate:water ratio of 1:3.

[0078] For example, when it is determined that the fan needs cleaning and the water level sensor detects that the water level in the water collection component is higher than a preset water level threshold, the solenoid valve from the water collection component to the cleaning solution preparation device can be opened. Condensate enters the cleaning solution preparation device under gravity or a water pump, and then a cleaning solute (such as solid particles or liquid concentrate) is delivered to the cleaning solution preparation device according to a preset ratio. A stirring motor in the mixing chamber of the cleaning solution preparation device is activated, continuously stirring to ensure the solute is fully dissolved in the solvent, forming a cleaning solution.

[0079] S500 controls the entry of the cleaning solution from the cleaning solution preparation device into the blower.

[0080] Following the steps above, once the cleaning solution is prepared, it can be atomized and sprayed onto the fan's impeller, volute, and other components through nozzles in a spray pipe connected to the fan. Furthermore, during the cleaning process, the fan can rotate at a low speed to ensure the cleaning solution evenly covers all parts, improving cleaning efficiency.

[0081] The aforementioned fan cleaning control method responds to the user's cooling command by controlling the evaporator and condenser to enter cooling mode, facilitating the subsequent collection of condensate to prepare a cleaning solution. By acquiring the vibration spectrum data of the range hood components, and considering the differences in vibration states between normal operation and oil accumulation, the method can accurately determine whether the range hood components need cleaning. When it is determined that the range hood components need cleaning and the water level in the water collection component is higher than a preset water level threshold, the method controls the condensate in the water collection component and the cleaning solute in the storage box to enter the cleaning solution preparation device according to a preset mixing ratio. The cleaning solution is then mixed in the cleaning solution preparation device to form a cleaning solution, which is then controlled to enter the fan to clean it. This method can rationally utilize condensate, an environmentally friendly resource, to clean the fan, reducing dependence on external water resources and solving the impact of condensate scaling. This achieves intelligent, precise, and efficient cleaning processes.

[0082] In an exemplary embodiment, the cleaning solution preparation device 110 includes a first outlet and a second outlet. The first outlet is connected to a fan via a first spray pipe 111. The cleaning solution in the cleaning solution preparation device is sprayed onto the range hood assembly via the first spray pipe 111 to clean the range hood assembly. The second outlet is connected to a second spray pipe 112, and the distance between the other end of the second spray pipe 112 and the condenser is less than a preset distance threshold. Figure 6 As shown, S400 includes:

[0083] S410, when it is determined that the fan needs to be cleaned and the water level of the water collection component is higher than the preset water level threshold, the cleaning solution in the cleaning solution preparation device is controlled to be sprayed onto the fan through the first spray pipe to clean the fan.

[0084] The method also includes:

[0085] S600, when it is determined that the fan does not need to be cleaned and the water level of the water collection component is higher than the preset water level threshold, controls the condensate in the water collection component to enter the cleaning solution preparation device, and sprays it to the outside of the condenser in the cooling mode through the second spray pipe.

[0086] Specifically, when it is determined that the fan needs cleaning and the water level in the water collection component is higher than a preset water level threshold, the first outlet of the cleaning solution preparation device can be opened and the second outlet closed. The cleaning solution is then sprayed onto the fan through the first spray pipe 111 to clean the fan. When it is determined that the fan does not need cleaning and the water level in the water collection component is higher than a preset water level threshold, the second outlet of the cleaning solution preparation device can be opened and the first outlet closed. The cleaning solution is then sprayed onto the outside of the condenser in cooling mode through the second spray pipe 112 to evaporate the condensate.

[0087] It is understood that the fan cleaning control method for solving the problem provided in this embodiment is similar to the implementation scheme described in the above-mentioned fan cleaning device embodiment. Therefore, the specific limitations in this embodiment can be found in the limitations of the fan cleaning device described above, and will not be repeated here.

[0088] In this embodiment, cleaning the fan by spraying not only saves cleaning solution but also increases the contact area between the cleaning solution and the fan, improving cleaning efficiency. Furthermore, when there is excess condensate, it is drained through evaporation, eliminating the need for a drainage system and improving condensate treatment efficiency.

[0089] In other embodiments, before the condensate in the water collection assembly and the cleaning solute in the storage box are introduced into the cleaning solution preparation device in a preset mixing ratio, the method further includes: extracting vibration characteristic data from the vibration spectrum data, determining the degree of dirtiness of the fan based on the vibration characteristic data, and determining the mixing ratio of condensate and cleaning solute based on the degree of dirtiness of the fan.

[0090] Vibration characteristic data include, but are not limited to, vibration frequency, noise amplitude, power frequency amplitude ratio, and high-frequency energy proportion.

[0091] In this embodiment, the mixing ratio of condensate and cleaning solute can be flexibly determined according to different degrees of dirtiness. For example, if the fan is heavily dirty, the proportion of cleaning solute can be increased to enhance the cleaning effect of the fan.

[0092] Specifically, the degree of dirtiness of the fan can be determined based on its vibration spectrum data, and the mixing ratio of cleaning solute and condensate can be flexibly adjusted accordingly. Since fans with different degrees of dirtiness exhibit different vibration frequencies, noise amplitudes, and other characteristic data during operation, vibration spectrum data of fans at different levels of dirtiness can be collected in advance. For example, vibration spectrum data can be collected for clean, lightly dirty, moderately dirty, and heavily dirty conditions. Vibration characteristic data can be extracted, and by analyzing this data, judgment thresholds for characteristic data corresponding to different degrees of dirtiness can be determined, such as vibration frequency thresholds or noise amplitude thresholds. This establishes a correspondence between spectrum data and degree of dirtiness, as well as a correspondence between degree of dirtiness and the mixing ratio of cleaning solute and condensate.

[0093] In the subsequent process of determining the degree of dirtiness, characteristic data such as vibration frequency and noise amplitude of the real-time collected vibration spectrum data can be extracted. The extracted vibration frequency and noise amplitude are compared with the corresponding judgment thresholds. If the vibration frequency reaches a certain vibration frequency threshold or the noise amplitude in the vibration spectrum data reaches a certain noise amplitude threshold, it can be determined that the fan needs to be cleaned and the degree of dirtiness of the fan can be determined. Based on the degree of dirtiness of the fan, the mixing ratio of cleaning solute and condensate is determined.

[0094] In other implementations, the degree of dirtiness can be obtained by calling a trained dirtiness grading model based on the extracted vibration feature data.

[0095] For example, the system can collect vibration spectrum data of the fan under clean, lightly dirty, moderately dirty, and heavily dirty conditions. By analyzing the vibration spectrum data under different levels of dirtiness, vibration feature data for judging the degree of dirtiness can be extracted, such as vibration frequency, noise amplitude, power frequency amplitude ratio, and high-frequency energy proportion. Then, dirtiness level labels are added to the extracted vibration spectrum feature data. Finally, a machine learning model, deep learning model, or vector machine classification model is trained based on the labeled vibration spectrum feature data to obtain a dirtiness level classification model. In practical applications, the extracted vibration feature data is input into the trained dirtiness level classification model, and the model outputs corresponding labels, specifically: 0 = clean, 1 = lightly dirty, 2 = moderately dirty, and 3 = heavily dirty. It can be understood that if the model outputs a label indicating that the fan is currently in a "clean" state, it can be determined that the fan does not need cleaning. If the water level in the water collection component is higher than a preset threshold, the controller can spray excess condensate water to the outside of the condenser. In other embodiments, a dirt classification model capable of identifying the degree of dirt can be trained using data from other dimensions and other types of models, without being specifically limited here.

[0096] Since the original vibration signal of the fan may contain some interference signals such as cooking vibration noise and airflow pulsation interference, in order to improve the accuracy of the judgment of the degree of dirt, some anti-interference suppression strategies can be set during the process of collecting the vibration spectrum data of the fan. For example, for the vibration noise generated during cooking, the collected original vibration signal can be subjected to time-domain amplitude limiting filtering. When the instantaneous acceleration exceeds 5g (set according to the actual measured pot collision data), the amplitude of the original vibration signal is limited within a short time window (usually less than 0.1 seconds), while the signal in the non-impact zone is allowed to pass directly. By determining the vibration spectrum data in the above way, interference can be suppressed and the authenticity of the data can be guaranteed.

[0097] Sudden changes in the airflow of a range hood can cause amplitude drift in the frequency at which the blades pass through. To eliminate airflow pulsation interference, the fan speed can be collected in real time. The original vibration signal is then dynamically resampled based on the ratio of the actual speed to the rated speed, thus eliminating the spectral shift caused by speed fluctuations. Dynamic resampling refers to dynamically adjusting the sampling frequency of the vibration signal according to the speed ratio to adapt it to the current speed. Generally, the sampling rate is directly proportional to the speed; that is, the higher the speed, the higher the sampling rate should be.

[0098] In other embodiments, only vibration data of the fan under steady-state conditions can be collected as valid vibration signals. For example, if the fan speed fluctuation lasts for more than 5 seconds and the fluctuation rate is less than 2%, the fan is determined to be in steady-state condition, and the vibration signal collected at this time is determined to be valid data. Data collected under non-steady-state conditions is discarded.

[0099] To improve the cleaning effect of the cleaning solution, the concentration of the cleaning solute can be increased by extending the time and flow rate of the cleaning solute into the cleaning solution preparation device. Alternatively, the concentration can be increased by increasing the number of times the cleaning solute is output during the cleaning solution preparation process. For example, the single-pass flow rates of the cleaning solute and condensate can be preset. If the fan is lightly dirty, the number of times the cleaning solute is output is set to one; if the fan is moderately dirty, the number of times the cleaning solute is output is set to two, and so on. It is understood that while increasing the output of the cleaning solute, the output of condensate can also be appropriately increased to prepare a cleaning solution of appropriate concentration, as long as the cleaning power of the cleaning solution is improved. In other embodiments, other methods can also be used to increase the concentration of the cleaning solute and the cleaning effect of the cleaning solution.

[0100] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0101] Based on the same inventive concept, this application also provides a fan cleaning device for implementing the fan cleaning control method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more fan cleaning device embodiments provided below can be found in the limitations of the fan cleaning control method described above, and will not be repeated here.

[0102] In one exemplary embodiment, such as Figure 7 As shown, a fan cleaning control device 700 is provided. The device is applied to the refrigeration range hood in the above embodiment. The device includes:

[0103] The refrigeration start-up module 710 is used to control the evaporator and condenser to enter the refrigeration mode in response to the user's refrigeration command.

[0104] The data acquisition module 720 is used to acquire the vibration spectrum data of the fan in the smoke hood assembly.

[0105] The spectrum analysis module 730 is used to determine whether the fan needs cleaning based on vibration spectrum data.

[0106] The solution preparation module 740 is used to control the condensate in the water collection component and the cleaning solute in the storage box to enter the cleaning solution preparation device according to a preset mixing ratio when it is determined that the fan needs to be cleaned and the water level of the water collection component is higher than the preset water level threshold. The cleaning solution is formed by mixing in the cleaning solution preparation device. The mixing ratio of condensate and cleaning solute is determined according to the degree of dirtiness of the fan. The degree of dirtiness of the fan is determined according to the vibration spectrum data of the fan.

[0107] The cleaning module 750 is used to control the entry of the cleaning solution from the cleaning solution preparation device into the blower to clean the blower.

[0108] In an exemplary embodiment, the cleaning solution preparation device includes a first outlet and a second outlet. The first outlet is connected to a fan via a first spray pipe, and the second outlet is connected to a second spray pipe. The distance between the other end of the second spray pipe and the condenser is less than a preset distance threshold. The solution preparation module 740 is further configured to control the cleaning solution in the cleaning solution preparation device to be sprayed onto the fan via the first spray pipe to clean the fan. The fan cleaning control device 700 is further configured to, when determining that the fan does not need cleaning and the water level in the water collection component is higher than a preset water level threshold, control the condensate in the water collection component to enter the cleaning solution preparation device and be sprayed onto the outside of the condenser in cooling mode via the second spray pipe to evaporate the condensate.

[0109] In one exemplary embodiment, the apparatus further includes a mixing ratio determination module for extracting vibration feature data from the vibration spectrum data, determining the degree of dirtiness of the fan based on the vibration feature data, and determining the mixing ratio of the condensate and the cleaning solute based on the degree of dirtiness of the fan.

[0110] Each module in the aforementioned fan cleaning device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0111] In one exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 8 As shown, the computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores data such as the vibration spectrum of the fan. The I / O interfaces are used for information exchange between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a fan cleaning control method.

[0112] Those skilled in the art will understand that Figure 8The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0113] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described fan cleaning method embodiment.

[0114] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps in the above-described fan cleaning method embodiment.

[0115] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described fan cleaning method embodiment.

[0116] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0117] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0118] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0119] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A fan cleaning device, characterized in that, The device includes a cleaning solution preparation device, a water collection component connected to the cleaning solution preparation device, and a storage box for storing cleaning solutes. The cleaning solution preparation device is connected to the fan of an external refrigeration range hood, and the water collection component is located below the evaporator of the refrigeration range hood. The cleaning solution preparation device is used to prepare a cleaning solution by mixing condensate and the cleaning solute according to a preset mixing ratio. The mixing ratio of condensate and the cleaning solute is determined according to the degree of dirtiness of the fan. The condensate is formed by the condensation of water vapor in the air when it encounters the evaporator in the cooling mode. The condensate flows to the water collection component under the action of gravity. The degree of dirtiness of the fan is determined by the following method: collecting vibration spectrum data of the fan under steady-state operating conditions, extracting vibration feature data from the vibration spectrum data, and calling a trained dirtiness classification model based on the vibration feature data to obtain the degree of dirtiness of the fan. The degree of dirtiness classification is obtained by training on historical vibration feature data carrying different dirtiness labels. The vibration feature data includes at least vibration frequency and noise amplitude. In the process of collecting the vibration spectrum data of the fan, the original vibration signal generated during the cooking process is subjected to time-domain amplitude limiting filtering, and the original vibration signal is dynamically resampled based on the ratio of the actual speed of the fan to the rated speed.

2. The fan cleaning device according to claim 1, characterized in that, The cleaning solution preparation device includes a first outlet and a second outlet; The first outlet is connected to the fan through the first spray pipe, and the cleaning solution in the cleaning solution preparation device is sprayed onto the smoke hood assembly through the first spray pipe to clean the smoke hood assembly; The second outlet is connected to the second spray pipe. The distance between one end of the second spray pipe and the condenser is less than a preset distance threshold. The condensate in the water collection assembly is sprayed through the second spray pipe of the cleaning solution preparation device to the outside of the condenser in the cooling mode to evaporate the condensate.

3. The fan cleaning device according to claim 1 or 2, characterized in that, The water collection assembly includes a first water collection tank and a second water collection tank that are connected to each other. The second water collection tank is connected to the cleaning solution preparation device. The first water collection tank is located below the evaporator and is positioned higher than the second water collection tank. Water vapor in the air condenses into condensate when it encounters an evaporator in cooling mode. The condensate then enters the first water collection tank under the influence of gravity, and the condensate in the first water collection tank enters the second water collection tank under the influence of gravity.

4. A refrigerated range hood, characterized in that, The refrigeration range hood includes a controller, range hood components, an evaporator, a condenser, and a fan cleaning device as described in any one of claims 1 to 3, all connected to the controller. The controller is configured to: respond to a cooling command, control the evaporator and condenser to enter a cooling mode; when it is determined that the fan needs to be cleaned and the water level of the water collection component is higher than a preset water level threshold, control the condensate in the water collection component and the cleaning solute in the storage box to flow into the cleaning solution preparation device according to a preset mixing ratio, mix in the cleaning solution preparation device to form a cleaning solution, and control the cleaning solution to enter the fan to clean the fan; And when it is determined that the fan does not need to be cleaned and the water level of the water collection component is higher than the preset water level threshold, the condensate in the water collection component is controlled to enter the cleaning solution preparation device and sprayed onto the outside of the condenser in the cooling mode to evaporate the condensate. The mixing ratio of the condensate and the cleaning solute is determined according to the degree of dirtiness of the fan, and the degree of dirtiness of the fan is determined according to the vibration spectrum data of the fan.

5. The refrigerated range hood according to claim 4, characterized in that, The range hood assembly shares an air duct with the condenser.

6. A fan cleaning control method, characterized in that, The method is applied to the refrigerated range hood as described in claim 4 or 5, and the method includes: In response to a cooling command, the evaporator and condenser are controlled to enter cooling mode; Obtain vibration spectrum data of the fan in the range hood assembly; Based on the vibration spectrum data, determine whether the fan needs cleaning; When it is determined that the fan needs cleaning and the water level of the water collection component is higher than a preset water level threshold, the condensate in the water collection component and the cleaning solute in the storage box are controlled to enter the cleaning solution preparation device according to a preset mixing ratio. The cleaning solution is mixed in the cleaning solution preparation device to form a cleaning solution. The preset mixing ratio is determined based on the degree of dirtiness of the fan. The degree of dirtiness of the fan is determined in the following way: the vibration spectrum data of the fan under steady-state operating conditions is collected, the vibration feature data in the vibration spectrum data is extracted, and based on the vibration feature data, a trained dirtiness classification model is called to obtain the degree of dirtiness of the fan. The degree of dirtiness classification is trained based on historical vibration feature data carrying different dirtiness labels. The vibration feature data includes at least vibration frequency and noise amplitude. In the process of collecting the vibration spectrum data of the fan, the original vibration signal generated during the cooking process is subjected to time-domain amplitude limiting filtering, and the original vibration signal is dynamically resampled based on the ratio of the actual speed of the fan to the rated speed. The cleaning solution in the cleaning solution preparation device is controlled to enter the blower to clean the blower.

7. The method according to claim 6, characterized in that, The cleaning solution preparation device includes a first outlet and a second outlet. The first outlet is connected to the fan through a first spray pipe, and the second outlet is connected to a second spray pipe. The distance between one end of the second spray pipe and the condenser is less than a preset distance threshold. The step of controlling the cleaning solution in the cleaning solution preparation device to enter the fan for cleaning the fan includes: controlling the cleaning solution in the cleaning solution preparation device to spray onto the fan through the first spray pipe for cleaning the fan; The method further includes: If it is determined that the fan does not need to be cleaned and the water level of the water collection component is higher than the preset water level threshold, the condensate in the water collection component is controlled to enter the cleaning solution preparation device and sprayed through the second spray pipe to the outside of the condenser in the cooling mode to evaporate the condensate.

8. The method according to claim 6, characterized in that, The degree of dirtiness of the fan is categorized as clean, lightly dirty, moderately dirty, and heavily dirty.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 6-8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method described in any one of claims 6-8.

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