Dual-channel air purifier control method and system, purifier and storage medium

Abstract

The invention relates to a double-channel air purifier control method and system, a purifier and a storage medium, and is applied to the field of air purification. The method comprises the steps that when the air purifier is started, a main filtering channel is opened, and an auxiliary filtering channel is closed; acquiring a first air inlet flow rate of an air inlet end of the main filter channel and a first air outlet flow rate of an air outlet end of the main filter channel in real time; calculating a first flow velocity difference value between the first air outlet flow velocity and the first air inlet flow velocity; if the first flow velocity difference value is larger than a preset standard difference value, it is judged that the main filter element needs to be replaced, and prompt information related to replacement of the main filter element is sent to a user terminal; closing the main filtering channel and opening the auxiliary filtering channel. The air purifier has the technical effects that the possibility that the air purifier is in a low-efficiency or ineffective operation state during the period of waiting for replacement of the main filter element is reduced, so that the purification effect of the air purifier is improved.

Description

Technical Field

[0001] This application relates to the technical field of air purification, and in particular to a dual-channel air purifier control method, system, purifier, and storage medium. Background Technology

[0002] An air purifier is a product that can adsorb, decompose, or transform various air pollutants, thereby effectively improving air cleanliness. The main working principle of an air purifier is to draw in indoor air, purify it through a built-in filtration system, and then blow the clean air back into the room.

[0003] The most mainstream air purifiers in this field are physical filtration types, which filter the air through an internal air filter. Depending on the purification needs, common types of filters include HEPA filters for filtering PM2.5, pollen, dust and other fine particles, and activated carbon filters for removing odors. To ensure the purification effect of the air purifier, the filter needs to be replaced regularly.

[0004] In the process of developing this application, the inventors discovered that the technology has at least the following problems: In actual application scenarios of air purifiers, such as when they are used to purify the air in a renovated house, users often do not actually live near the air purifier and it is usually difficult to replace the filter in time. As a result, the air purifier is in an inefficient or ineffective operating state while waiting for the filter to be replaced, which in turn affects the purification effect of the air purifier. Summary of the Invention

[0005] To help improve the purification effect of air purifiers, this application provides a dual-channel air purifier control method, system, purifier, and storage medium.

[0006] In a first aspect, this application provides a dual-channel air purifier control method, employing the following technical solution: the method is based on a dual-channel air purifier, which has a main filter channel and an auxiliary filter channel, and a main filter element and an auxiliary filter element are respectively provided in the main filter channel and the auxiliary filter channel; the method includes: when the air purifier is turned on, opening the main filter channel and closing the auxiliary filter channel; acquiring in real time the first inlet air velocity at the air inlet end of the main filter channel and the first outlet air velocity at the air outlet end of the main filter channel; calculating the first velocity difference between the first outlet air velocity and the first inlet air velocity; if the first velocity difference is greater than a preset standard deviation, determining that the main filter element needs to be replaced and sending a prompt message related to the need to replace the main filter element to the user terminal; closing the main filter channel and opening the auxiliary filter channel.

[0007] In one specific implementation, the method further includes: recording the cumulative duration of the auxiliary filter channel being in the open state; closing the main filter channel and opening the auxiliary filter channel includes: determining whether the cumulative duration is less than a preset auxiliary filter lifespan; if the cumulative duration is less than the preset auxiliary filter lifespan, then closing the main filter channel and opening the auxiliary filter channel; otherwise, controlling the air purifier to stop and sending a prompt message related to the need to replace the auxiliary filter to the user terminal.

[0008] In a specific implementation scheme, after determining that the main filter needs to be replaced and sending a prompt message related to the main filter needing replacement to the user terminal, the method further includes: recording the interval duration from the determination that the main filter needs to be replaced to the main filter being replaced in a preset replacement interval database; setting the longest interval duration in the replacement interval database as the waiting time; closing the main filter channel and opening the auxiliary filter channel includes: calculating the difference between the accumulated time and the preset auxiliary filter lifespan, and setting the difference as the remaining time; if the remaining time is longer than the waiting time, closing the main filter channel and opening the auxiliary filter channel; if the remaining time is not greater than the waiting time, controlling the air purifier to stop and sending a prompt message related to insufficient remaining time of the auxiliary filter to the user terminal.

[0009] In one specific implementation, after controlling the air purifier to stop and sending a prompt message related to insufficient remaining time of the auxiliary filter to the user terminal, the method further includes: when the main filter is detected to have been replaced and the air purifier is turned on, simultaneously opening the main filter channel and the auxiliary filter channel to enter the high-efficiency purification mode, and recording the high-efficiency purification time; when the high-efficiency purification time reaches the remaining time of the auxiliary filter, closing the auxiliary filter channel to exit the high-efficiency purification mode; and sending a prompt message related to the need to replace the auxiliary filter to the user terminal.

[0010] In one specific implementation, the method further includes: recording the pause duration when the auxiliary filter channel is continuously closed; opening the auxiliary filter channel when the pause duration reaches a preset standard test duration and the air purifier is in operation; acquiring the second inlet air velocity at the inlet end and the second outlet air velocity at the outlet end of the auxiliary filter channel in real time; calculating the second velocity difference between the second outlet air velocity and the second inlet air velocity; if the second velocity difference is less than a preset standard deviation, determining that the auxiliary filter element is in normal condition and closing the auxiliary filter channel; if the second velocity difference is not less than the preset standard deviation, determining that the auxiliary filter element is in abnormal condition and sending a prompt message related to the abnormal condition of the auxiliary filter element to the user terminal.

[0011] In one specific implementation scheme, the dual-channel air purifier also has a return air channel, the return air channel and the air outlet of the main filter channel are located on the same side; the method further includes: acquiring the return airflow velocity in the return air channel in real time; if the return airflow velocity is greater than the preset standard return airflow velocity, the return airflow velocity is determined to be abnormal, the air purifier is turned off and a prompt message related to the air outlet being too close to an obstacle is sent to the user terminal.

[0012] In one specific implementation scheme, determining the abnormal return air velocity includes: calculating the cumulative working time of the air purifier since it was turned on; if the cumulative working time is less than a preset initial working time, then determining the abnormal return air velocity; if the cumulative working time reaches the preset initial working time, then stopping the acquisition of the return air velocity in the return air duct.

[0013] Secondly, this application provides a dual-channel air purifier control system, employing the following technical solution: the control system is based on a dual-channel air purifier, which has a main filter channel and an auxiliary filter channel, and a main filter element and an auxiliary filter element are respectively installed in the main filter channel and the auxiliary filter channel; the control system includes: a first channel switching module, used to open the main filter channel and close the auxiliary filter channel when the air purifier is turned on; an airflow velocity acquisition module, used to acquire in real time the first inlet airflow velocity at the inlet end of the main filter channel and the first outlet airflow velocity at the outlet end of the main filter channel; a velocity difference calculation module, used to calculate the first velocity difference between the first outlet airflow velocity and the first inlet airflow velocity; a prompt information processing module, used to determine that the main filter element needs to be replaced and send a prompt information related to the need to replace the main filter element to the user terminal if the first velocity difference value is greater than a preset standard deviation value; and a second channel switching module, used to close the main filter channel and open the auxiliary filter channel.

[0014] Thirdly, this application provides an air purifier that adopts the following technical solution: it includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as in any of the dual-channel air purifier control methods described above.

[0015] Fourthly, this application provides a computer-readable storage medium that stores a computer program capable of being loaded by a processor and executing any of the above-mentioned dual-channel air purifier control methods.

[0016] In summary, this application has the following beneficial technical effects: 1. During normal use, air purifiers primarily rely on the main filter channel and main filter element to purify indoor air. The air purifier monitors the status of the main filter element in the main filter channel in real time. When it determines that the main filter element is in abnormal condition and needs replacement, it automatically closes the main filter channel and opens the auxiliary filter channel, using the auxiliary filter channel and auxiliary filter element to continue purifying the indoor air. Simultaneously, it sends a reminder message to remind the user to replace the main filter element in time. While the user is replacing the main filter element, the air purifier can continue to purify the indoor air using the auxiliary filter channel and auxiliary filter element, reducing the possibility of the air purifier operating inefficiently or ineffectively while waiting for the main filter element to be replaced, thereby improving the purification effect of the air purifier. 2. The setting to shut down the air purifier when the remaining time of the auxiliary filter is insufficient to support the user to replace the main filter reduces the possibility of the air purifier operating inefficiently or ineffectively using the auxiliary filter, thereby further improving the purification effect of the air purifier. 3. When the remaining lifespan of the auxiliary filter is insufficient to support the user's replacement of the main filter, the system waits for the user to replace the main filter before simultaneously opening both the main and auxiliary filter channels to enter high-efficiency purification mode. The auxiliary filter channel is then closed when the auxiliary filter reaches the end of its service life. This approach makes reasonable use of the remaining lifespan of the auxiliary filter, allowing it to work completely until its replacement lifespan, thereby reducing the possibility of waste and improving its utilization rate. 4. By using a return air duct and real-time monitoring of the return airflow within the duct, the air purifier can promptly detect and shut down when placed in an unsuitable location for self-protection, and remind the user to adjust the position of the air purifier. This reduces the possibility of the air purifier operating for an extended period of time with the air outlet too close to an obstacle after the user turns it on and leaves the room, thereby further improving the purification effect of the air purifier. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure and control of the dual-channel air purifier in the embodiments of this application.

[0018] Figure 2 This is a schematic diagram illustrating the arrangement of return air ducts in an embodiment of this application.

[0019] Figure 3 This is a flowchart of the dual-channel air purifier control method in the embodiments of this application.

[0020] Figure 4 This is a structural block diagram of the dual-channel air purifier control system in the embodiments of this application.

[0021] Reference numerals: 1. Main filtration channel; 2. Auxiliary filtration channel; 3. Return air channel; 4. Main filter element; 5. Auxiliary filter element; 6. Solenoid valve; 7. Gas flow meter; 401. First channel switching module; 402. Airflow velocity acquisition module; 403. Velocity difference calculation module; 404. Prompt information processing module; 405. Second channel switching module. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a dual-channel air purifier control method, referring to... Figure 1 and Figure 2 This method is based on a dual-channel air purifier. Specifically, the dual-channel air purifier has independent main filter channel, auxiliary filter channel, and return air channel. The main filter and auxiliary filter are detachably installed in the main filter channel and auxiliary filter channel, respectively. The installation method of the main filter and auxiliary filter can adopt the existing detachable installation method of air purifier filters, which will not be elaborated here. Solenoid valves are installed on the main filter channel and auxiliary filter channel to control their on / off state. The air purifier's control system can control the on / off state of the main filter channel by controlling the opening and closing of the solenoid valves. The air inlet of the return air channel is located on the same side as the air outlet of the main filter channel, and the air outlet of the return air channel is connected to the air outlet of the main filter channel. The return air channel is in a normally open state. Figure 2 The middle arrow indicates the direction of airflow in the return air duct.

[0024] Reference Figure 1 and Figure 2 The air purifier is equipped with gas flow meters at both the inlet and outlet of the main and auxiliary filtration channels. Specifically, the main filter in the main filtration channel and the auxiliary filter in the auxiliary filtration channel are located between the inlet and outlet flow meters. These gas flow meters allow the air purifier to monitor the real-time airflow velocity at the inlet and outlet of the main and auxiliary filtration channels. The inlet velocity represents the velocity of the unpurified airflow entering the main or auxiliary filtration channel, while the outlet velocity represents the velocity of the purified airflow after passing through the main or auxiliary filtration channel. A gas flow meter is also installed in the return air channel to measure the airflow velocity entering the return air channel. This dual-channel air purifier can connect to user terminals such as mobile phones, tablets, and laptops, allowing users to remotely control the air purifier and receive feedback information from it.

[0025] Reference Figure 3 The method includes the following steps: S10: When the air purifier is turned on, the main filter channel is opened and the auxiliary filter channel is closed.

[0026] Specifically, during normal use of an air purifier, each time the user turns it on, the air purifier will automatically switch to the state of opening the main filter channel and closing the auxiliary filter channel; that is, after the air purifier is turned on, it will use the main filter channel to purify the airflow in the room by default.

[0027] S20, real-time acquisition of the first inlet air velocity at the inlet end of the main filter channel and the first outlet air velocity at the outlet end of the main filter channel.

[0028] Specifically, during the process of the air purifier purifying indoor air using the main filter channel, gas flow meters installed at the air inlet and air outlet of the main filter channel are used to monitor the first inlet air velocity and the first outlet air velocity at the air outlet of the main filter channel in real time. The first inlet air velocity is the air velocity of the unpurified airflow entering the main filter channel of the air purifier, and the first outlet air velocity is the air velocity of the air after being purified by the main filter element through the main filter channel.

[0029] S30, calculate the first velocity difference between the first outlet velocity and the first inlet velocity.

[0030] Specifically, for the detected first outflow velocity and first inflow velocity, the first velocity difference between the two is calculated in real time. The first velocity difference is also the velocity loss value of the airflow after entering the air purifier and being purified by the main filter.

[0031] S40, if the first flow rate difference is greater than the preset standard deviation, it is determined that the main filter needs to be replaced and a prompt message related to the main filter needing to be replaced is sent to the user terminal.

[0032] Specifically, as the air purifier continues to operate, fine particulate matter in the air is continuously filtered by the main filter, purifying the indoor air. However, the permeability of the main filter gradually decreases as fine particulate matter accumulates. The preset standard deviation can be set as the airflow velocity loss value corresponding to when the main filter reaches the replacement state. If the first velocity difference is greater than the preset standard deviation, it means that the airflow velocity loss after entering the air purifier and being purified by the main filter is significantly abnormal. Consequently, the air purifier determines that the main filter needs to be replaced and sends a notification message related to the need to replace the main filter to the user's mobile phone, tablet, laptop, or other user terminals to remind the user to replace the main filter in a timely manner.

[0033] S50, close the main filter channel and open the auxiliary filter channel.

[0034] Specifically, after the air purifier determines that the main filter needs to be replaced and prompts the user to replace it, it automatically closes the main filter channel and opens the auxiliary filter channel. It then uses the auxiliary filter channel and auxiliary filter to continue purifying the indoor air. This allows the air purifier to continue purifying the indoor air while the user comes to replace the main filter, reducing the possibility of the air purifier operating in an inefficient or ineffective state while waiting for the main filter to be replaced, thereby improving the purification effect of the air purifier.

[0035] In one embodiment, considering that the auxiliary filter may also experience a decrease in filtration efficiency and require replacement after prolonged use, the dual-channel air purifier control method further includes a step of recording the cumulative opening time of the auxiliary filter channel. The step of closing the main filter channel and opening the auxiliary filter channel specifically includes: After the air purifier determines that the main filter needs replacement, it first checks if the cumulative open time of the auxiliary filter channel is less than the preset lifespan of the auxiliary filter. If the cumulative time is less than the preset lifespan, it indicates that the auxiliary filter is still in a normal filtering state. In this case, the main filter channel is closed and the auxiliary filter channel is opened, and the auxiliary filter channel and auxiliary filter are used to continuously purify the indoor air. If the cumulative time is not less than the preset lifespan of the auxiliary filter, it indicates that the auxiliary filter has also reached the point where it needs replacement. In this case, even if the air purifier switches to the auxiliary filter channel, it cannot continue to use the auxiliary filter to purify the indoor air normally. Therefore, to reduce the situation where the air purifier operates inefficiently or ineffectively with the auxiliary filter while waiting for the main filter to be replaced, the air purifier is controlled to shut down and a prompt message related to the need to replace the auxiliary filter is sent to the user's terminal to remind the user to replace both the main filter and the auxiliary filter at the same time. In other words, when both the main filter and the auxiliary filter are in a state where they need replacement, the air purifier will automatically switch to a shutdown state to avoid prolonged inefficient or ineffective operation.

[0036] In one embodiment, considering that if the auxiliary filter reaches the end of its lifespan and needs replacement while waiting for the user to replace the main filter, the air purifier may still operate inefficiently or ineffectively using the auxiliary filter during this period; after determining that the main filter needs replacement and sending a notification message related to the main filter replacement to the user's terminal, the following steps may also be performed: The steps from when the main filter needs to be replaced to when it is actually replaced are recorded in the preset replacement interval database. Then, the longest interval in the replacement interval database is set as the waiting time. For example, if the user has replaced the main filter three times before, and the intervals from when the main filter needs to be replaced to when it is actually replaced are 0.5 hours, 1 hour, and 2 hours respectively, then the waiting time is set to 2 hours.

[0037] The steps of closing the main filter channel and opening the auxiliary filter channel can be specifically executed as follows: First, calculate the difference between the cumulative time the auxiliary filter channel has been open and the preset lifespan of the auxiliary filter element, and set this difference as the remaining time. If the remaining time is greater than the waiting time, that is, the time during which the auxiliary filter element can work normally is greater than the maximum time among the user's historical intervals for replacing the main filter element, it is determined that the auxiliary filter element can be in a normal state of purifying indoor air before the user comes to replace the main filter element. Then, the main filter channel is closed and the auxiliary filter channel is opened normally, and the auxiliary filter channel is used to purify indoor air normally while the main filter element is waiting to be replaced. If the remaining time is not greater than the waiting time, it is determined that the auxiliary filter element will reach the end of its lifespan before the user comes to replace the main filter element. In order to reduce the situation where the air purifier operates inefficiently or ineffectively using the auxiliary filter element, the steps of controlling the air purifier to stop and sending a prompt message related to insufficient remaining time of the auxiliary filter element to the user terminal are executed to remind the user to replace the auxiliary filter element in time. The setting to shut down the air purifier when the remaining time of the auxiliary filter is insufficient to support the user to replace the main filter reduces the possibility of the air purifier operating inefficiently or ineffectively using the auxiliary filter, thereby further improving the purification effect of the air purifier.

[0038] In one embodiment, considering that the air purifier will not switch to the auxiliary filtration channel to purify the air when the remaining time of the auxiliary filter is insufficient to support the user to replace the main filter, which may result in the auxiliary filter not working to its full replacement life and thus being wasted, after controlling the air purifier to stop and sending a prompt message related to insufficient remaining time of the auxiliary filter to the user's terminal, the following steps can also be performed: When the main filter is detected to have been replaced and the air purifier is turned on, meaning the air purifier can once again utilize the main filter channel for air purification, both the main and auxiliary filters are simultaneously opened to enter high-efficiency purification mode, and the high-efficiency purification duration is recorded. In high-efficiency purification mode, the air purifier simultaneously uses both the main and auxiliary filters to purify indoor air. When the high-efficiency purification duration reaches the remaining time of the auxiliary filter, the auxiliary filter channel is closed to exit high-efficiency purification mode. Simultaneously, a notification message indicating that the auxiliary filter needs replacement is sent to the user's terminal to remind them to replace the auxiliary filter that has reached the end of its service life. If the remaining time of the auxiliary filter is insufficient to allow the user to replace the main filter, the system waits for the user to replace the main filter before simultaneously opening both the main and auxiliary filters to enter high-efficiency purification mode, and then closes the auxiliary filter channel when it reaches the end of its service life. This achieves the effect of rationally utilizing the remaining lifespan of the auxiliary filter, allowing it to work completely until its replacement period, thereby reducing the possibility of wasted auxiliary filters and improving their utilization rate.

[0039] In one embodiment, considering that if the auxiliary filter element is idle for a long time, it may become ineffective in purifying indoor air due to material lifespan or other external factors, even if it has not actually reached the end of its service life. Consequently, when the main filter element needs to be replaced and the air purifier switches the purification channel to the auxiliary filtration channel, the auxiliary filter element in the auxiliary filtration channel may still have sufficient remaining lifespan, but it may no longer be able to effectively purify indoor air, thus affecting the purification effect of the air purifier, the method further includes the following steps: The air purifier records the duration of the auxiliary filter channel remaining closed. When the duration reaches the preset standard test duration and the air purifier is in operation, the auxiliary filter channel is opened. The second intake air velocity at the intake end and the second outlet air velocity at the outlet end of the auxiliary filter channel are acquired in real time, and the second velocity difference between the second outlet air velocity and the second intake air velocity is calculated. If the second velocity difference is less than the preset standard deviation, it indicates that the airflow velocity after purification by the auxiliary filter is normal, thus determining that the auxiliary filter is in normal condition. The auxiliary filter channel is then closed to complete the test of the auxiliary filter. If the second velocity difference is not less than the preset standard deviation, it indicates that the airflow velocity after purification by the auxiliary filter is significantly abnormal, thus determining that the auxiliary filter is in abnormal condition. A prompt message related to the abnormal auxiliary filter condition is sent to the user terminal to remind the user to replace the abnormal auxiliary filter in a timely manner. Therefore, air purifiers can automatically check the condition of the auxiliary filter in the auxiliary filtration channel periodically, and promptly remind users to replace the abnormal auxiliary filter when an abnormal condition is detected. This reduces the possibility that the auxiliary filter in the auxiliary filtration channel may have sufficient remaining lifespan but is actually unable to effectively purify indoor air when the air purifier switches to the purification channel, thereby further improving the purification effect and stability of the air purifier.

[0040] In one embodiment, considering that air purifiers may operate for extended periods in unoccupied indoor spaces, meaning users typically leave after turning on the air purifier; and that the air purifier's outlet being close to obstacles such as walls can affect normal airflow circulation, reduce the effective purification range, severely impact purification performance, and increase energy consumption, the method further includes the following steps: The system monitors the real-time airflow velocity within the return air duct. Since air purifiers are typically placed in enclosed rooms, and the return air duct and the main filter's air outlet are on the same side, most of the detected return airflow is reflected back after being blown out of the main filter's outlet by walls or other obstacles. Normally, if the air purifier is positioned correctly, the return air duct remains relatively still with little or no airflow due to the absence of backflow. If the return airflow velocity exceeds the preset standard return airflow velocity, it indicates that there is an obstacle blocking the air purifier's outlet or that the outlet is too close to an obstacle. This causes a large amount of airflow from the main filter's outlet to be reflected back into the return air duct, indicating an abnormal return airflow velocity. The system then shuts down the air purifier and sends a notification message related to the outlet being too close to an obstacle to the user's terminal, reminding them to adjust the air purifier's position. Therefore, by using a return air duct and real-time monitoring of the return airflow within the duct, the air purifier can promptly identify and shut down when placed in an unsuitable location for self-protection, and remind the user to adjust the air purifier's position. This reduces the possibility of the air purifier operating for an extended period with its outlet too close to an obstacle after the user turns it on and leaves the room, thereby further improving the air purifier's purification effect.

[0041] In one embodiment, considering that the air purifier itself does not have the function of moving during operation, that is, the abnormal placement of the air purifier will only occur when the air purifier is turned on; in order to reduce the long-term ineffective monitoring of the return airflow in the return air duct, the step of determining the abnormal return airflow velocity can be specifically performed as follows: The system calculates the cumulative operating time of the air purifier after its initial startup. If the cumulative operating time is less than the preset initial operating time, the return air velocity is considered abnormal. The initial operating time is typically set to around 30 seconds. The setting to only detect abnormal return air velocity when the cumulative operating time is less than the preset initial operating time is primarily to ensure that the user is likely still near the air purifier when an abnormality is detected, allowing the user to adjust the air purifier's position promptly. If the cumulative operating time reaches the preset initial operating time, it indicates that the return air velocity in the return air duct was normal during the initial operating time, meaning the air purifier's position was not abnormal. In this case, the air purifier is considered to be working normally, and the acquisition of return air velocity in the return air duct is stopped. Therefore, the air purifier only checks for abnormal return airflow in the return air duct for a short period after startup, and automatically stops monitoring the return air velocity when there are no abnormalities in the initial stage of startup. This reduces the possibility of prolonged, ineffective monitoring of return airflow in the return air duct, thereby further reducing the air purifier's energy consumption.

[0042] Figure 3 This is a flowchart illustrating a dual-channel air purifier control method in one embodiment. It should be understood that, although... Figure 3 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows; unless explicitly stated otherwise, there is no strict order requirement for the execution of these steps, and they can be executed in other orders; and Figure 3 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0043] Based on the above method, this application also discloses a dual-channel air purifier control system.

[0044] like Figure 4 As shown, the control system is based on a dual-channel air purifier, which has a main filtration channel and an auxiliary filtration channel, and a main filter element and an auxiliary filter element are respectively installed in the main filtration channel and the auxiliary filtration channel; the control system includes: The first channel switching module 401 is used to open the main filter channel and close the auxiliary filter channel when the air purifier is turned on. The airflow velocity acquisition module 402 is used to acquire the first inlet airflow velocity at the inlet end of the main filter channel and the first outlet airflow velocity at the outlet end of the main filter channel in real time. The velocity difference calculation module 403 is used to calculate the first velocity difference between the first outlet velocity and the first inlet velocity; The prompt information processing module 404 is used to determine that the main filter needs to be replaced if the first flow rate difference is greater than the preset standard deviation and send a prompt information related to the need to replace the main filter to the user terminal. The second channel switching module 405 is used to close the main filter channel and open the auxiliary filter channel.

[0045] In one embodiment, the second channel switching module 405 is further configured to record the cumulative duration of the auxiliary filter channel being in the open state; determine whether the cumulative duration is less than the preset auxiliary filter lifespan; if the cumulative duration is less than the preset auxiliary filter lifespan, then close the main filter channel and open the auxiliary filter channel; otherwise, control the air purifier to stop and send a prompt message related to the need to replace the auxiliary filter to the user terminal.

[0046] In one embodiment, the second channel switching module 405 is further configured to record, in a preset replacement interval database, the interval from when the main filter element is determined to need to be replaced to when the main filter element is replaced; set the longest interval in the replacement interval database as the waiting time; closing the main filter channel and opening the auxiliary filter channel includes: calculating the difference between the accumulated time and the preset auxiliary filter element lifespan, and setting the difference as the remaining time; if the remaining time is longer than the waiting time, closing the main filter channel and opening the auxiliary filter channel; if the remaining time is not greater than the waiting time, controlling the air purifier to stop and sending a prompt message related to insufficient remaining time of the auxiliary filter element to the user terminal.

[0047] In one embodiment, the second channel switching module 405 is further configured to simultaneously open the main filter channel and the auxiliary filter channel to enter the high-efficiency purification mode when the main filter is detected to have been replaced and the air purifier is turned on, and record the high-efficiency purification duration; when the high-efficiency purification duration reaches the remaining duration of the auxiliary filter, close the auxiliary filter channel to exit the high-efficiency purification mode; and send a prompt message related to the need to replace the auxiliary filter to the user terminal.

[0048] In one embodiment, the second channel switching module 405 is further configured to record the pause duration when the auxiliary filter channel is continuously in a closed state; when the pause duration reaches a preset standard test duration and the air purifier is in working state, the auxiliary filter channel is opened; the second inlet air velocity at the air inlet end of the auxiliary filter channel and the second outlet air velocity at the air outlet end of the auxiliary filter channel are acquired in real time; the second velocity difference between the second outlet air velocity and the second inlet air velocity is calculated; if the second velocity difference is less than a preset standard deviation, the auxiliary filter element is determined to be in normal condition and the auxiliary filter channel is closed; if the second velocity difference is not less than the preset standard deviation, the auxiliary filter element is determined to be in abnormal condition and a prompt message related to the abnormal condition of the auxiliary filter element is sent to the user terminal.

[0049] In one embodiment, the dual-channel air purifier also has a return air channel, the return air channel and the air outlet of the main filter channel are located on the same side; the second channel switching module 405 is also used to obtain the return air flow rate in the return air channel in real time; if the return air flow rate is greater than the preset standard return air flow rate, it is determined that the return air flow rate is abnormal, the air purifier is turned off and a prompt message related to the air outlet being too close to an obstacle is sent to the user terminal.

[0050] In one embodiment, the second channel switching module 405 is also used to calculate the cumulative working time of the air purifier after this power-on; if the cumulative working time is less than the preset initial working time, the return air flow rate is determined to be abnormal; if the cumulative working time reaches the preset initial working time, the acquisition of the return air flow rate in the return air channel is stopped.

[0051] It should be noted that the dual-channel air purifier control system provided in this embodiment is only illustrated by the above-described division of functional modules / units when specifically controlling the air purifier. In practical applications, the above functions can be assigned to different functional modules / units as needed, that is, the internal structure of the dual-channel air purifier control system can be divided into different functional modules / units to complete all or part of the functions described above. Furthermore, the implementation method of the dual-channel air purifier control method provided in the above method embodiments and the implementation method of the dual-channel air purifier control system provided in this embodiment belong to the same concept. The specific implementation process of the dual-channel air purifier control system provided in this embodiment is detailed in the above method embodiments and will not be repeated here.

[0052] This application also discloses an air purifier.

[0053] Specifically, the air purifier may include, but is not limited to, a processor and a memory. The processor and memory can be connected via a bus or other means. The processor can be a Central Processing Unit (CPU). The processor can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, graphics processing units (GPUs), embedded neural network processing units (NPUs) or other dedicated deep learning coprocessors, discrete gate or transistor logic devices, discrete hardware components, or combinations of the above types of chips.

[0054] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the methods in the above embodiments of this application. The processor executes various functional applications and data processing by running the non-transitory software programs, instructions, and modules stored in the memory, thereby implementing the methods in the above embodiments. The memory may include a program storage area and a data storage area, wherein the program storage area may store the operating system and at least one application program required for a function; the data storage area may store data created by the processor, etc. Furthermore, the memory may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, the memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0055] This application also discloses a computer-readable storage medium.

[0056] Specifically, the computer-readable storage medium is used to store a computer program, which, when executed by a processor, implements the methods described in the above-described method embodiments. Those skilled in the art will understand that implementing all or part of the processes in the methods described above can be accomplished by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments described above. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk drive (HDD), or solid-state drive (SSD), etc.; the storage medium can also include combinations of the above types of memory.

[0057] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A dual-channel air purifier control method, characterized in that, The method is based on a dual-channel air purifier, which has a main filtration channel and an auxiliary filtration channel, and a main filter element and an auxiliary filter element are respectively disposed in the main filtration channel and the auxiliary filtration channel; the method includes: When the air purifier is turned on, the main filter channel is opened and the auxiliary filter channel is closed. Real-time acquisition of the first inlet air velocity at the inlet end of the main filter channel and the first outlet air velocity at the outlet end of the main filter channel; Calculate the first velocity difference between the first outlet velocity and the first inlet velocity; If the first flow rate difference is greater than the preset standard deviation, it is determined that the main filter needs to be replaced and a prompt message related to the need to replace the main filter is sent to the user terminal. Close the main filter channel and open the auxiliary filter channel.

2. The method according to claim 1, characterized in that, The method further includes: recording the cumulative duration for which the auxiliary filter channel is in the open state; The step of closing the main filter channel and opening the auxiliary filter channel includes: Determine whether the cumulative duration is less than the preset auxiliary filter lifespan. If the cumulative duration is less than the preset auxiliary filter lifespan, then the main filter channel is closed and the auxiliary filter channel is opened. Otherwise, the air purifier will be shut down and a notification message related to the need to replace the auxiliary filter will be sent to the user terminal.

3. The method according to claim 2, characterized in that, After determining that the main filter needs to be replaced and sending a notification message related to the need to replace the main filter to the user terminal, the method further includes: Record the time interval from when the main filter element is determined to need to be replaced to when the main filter element is actually replaced in the preset replacement interval database. Set the longest interval in the replacement interval database as the waiting time; The step of closing the main filter channel and opening the auxiliary filter channel includes: Calculate the difference between the cumulative duration and the preset auxiliary filter lifespan, and set the difference as the remaining duration; If the remaining time is greater than the waiting time, then the main filtering channel is closed and the auxiliary filtering channel is opened; If the remaining time is not greater than the waiting time, the air purifier is controlled to stop and a prompt message related to insufficient remaining time of the auxiliary filter is sent to the user terminal.

4. The method according to claim 3, characterized in that, After controlling the air purifier to stop and sending a prompt message related to insufficient remaining time of the auxiliary filter to the user terminal, the method further includes: When the main filter is detected to have been replaced and the air purifier is turned on, the main filter channel and the auxiliary filter channel are opened simultaneously to enter the high-efficiency purification mode, and the high-efficiency purification duration is recorded. When the high-efficiency purification time reaches the remaining time of the auxiliary filter element, the auxiliary filter channel is closed to exit the high-efficiency purification mode. Send a notification message to the user terminal indicating that the auxiliary filter needs to be replaced.

5. The method according to claim 1, characterized in that, The method further includes: Record the duration of the pause when the auxiliary filter channel remains closed; When the pause time reaches the preset standard test time and the air purifier is in working condition, the auxiliary filter channel is opened. Real-time acquisition of the second air intake velocity at the air inlet end of the auxiliary filter channel and the second air outlet velocity at the air outlet end of the auxiliary filter channel; Calculate the second velocity difference between the second outlet velocity and the second inlet velocity; If the second flow rate difference is less than the preset standard deviation, the auxiliary filter element is determined to be in normal condition, and the auxiliary filter channel is closed. If the second flow rate difference is not less than the preset standard deviation, the auxiliary filter element is determined to be in an abnormal state, and a prompt message related to the abnormal state of the auxiliary filter element is sent to the user terminal.

6. The method according to claim 1, characterized in that, The dual-channel air purifier also has a return air channel, which is located on the same side as the air outlet of the main filter channel; The method further includes: Real-time acquisition of return airflow velocity within the return air duct; If the return airflow velocity is greater than the preset standard return airflow velocity, the return airflow velocity is determined to be abnormal, the air purifier is turned off, and a prompt message related to the air outlet being too close to an obstacle is sent to the user terminal.

7. The method according to claim 6, characterized in that, The determination of abnormal return air velocity includes: Calculate the cumulative operating time of the air purifier since it was turned on this time; If the cumulative working time is less than the preset initial working time, the return air velocity is determined to be abnormal. If the cumulative working time reaches the preset initial working time, the acquisition of the return airflow velocity in the return air duct will be stopped.

8. A dual-channel air purifier control system, characterized in that, The control system is based on a dual-channel air purifier, which has a main filtration channel and an auxiliary filtration channel, and a main filter element and an auxiliary filter element are respectively installed in the main filtration channel and the auxiliary filtration channel. The control system includes: The first channel switching module (401) is used to open the main filter channel and close the auxiliary filter channel when the air purifier is turned on. The airflow velocity acquisition module (402) is used to acquire the first inlet airflow velocity at the inlet end of the main filter channel and the first outlet airflow velocity at the outlet end of the main filter channel in real time. The velocity difference calculation module (403) is used to calculate the first velocity difference between the first outlet velocity and the first inlet velocity. The prompt information processing module (404) is used to determine that the main filter needs to be replaced and send a prompt information related to the need to replace the main filter to the user terminal if the first flow rate difference is greater than the preset standard deviation. The second channel switching module (405) is used to close the main filter channel and open the auxiliary filter channel.

9. An air purifier, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer program is stored that can be loaded by a processor and execute the method as described in any one of claims 1 to 7.

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