An air purifier, a filter control method and medium of the air purifier

Abstract

An embodiment of the present invention provides an air purifier, a filter control method for an air purifier, and a medium. The air purifier includes a housing, a base, a filter, and a controller; the filter is cylindrical; a rotating mechanism is provided on the base, and the filter is disposed on the rotating mechanism; the housing is disposed on the base and surrounds the filter, and an air inlet area is provided on the side wall of the housing; the rotating mechanism is used to drive the filter to rotate so that different areas of the filter correspond to the air inlet area; the controller is used to obtain filter information; according to the filter information, control the rotating mechanism to rotate so that different areas of the filter correspond to the air inlet area of the housing. By driving the filter to rotate through the rotating mechanism, the corresponding position between the filter and the air inlet area is dynamically adjusted, so that the surface load of the filter is evenly distributed, avoiding premature saturation caused by local high-load adsorption, making the adsorption of the filter more uniform, improving the purification performance and efficiency, and prolonging the service life of the filter.

Description

Technical Field

[0001] The present invention relates to the technical field of air purifier control, and particularly to an air purifier, a filter screen control method for an air purifier, and a computer-readable storage medium. Background Art

[0002] As an effective method to improve the indoor air cleanliness, air purifiers have received extensive attention. Currently, most cylindrical filter screens usually adopt a composite filter screen design, that is, filter materials with multiple functions are compounded together to achieve the adsorption and purification of multiple pollutants. Although this design can remove multiple pollutants at one time in a short period, if the composite filter screen needs to be replaced due to the adsorption saturation of a single pollutant, the unsaturated filter screen layers in the composite filter screen will also be replaced together, resulting in an increase in the filter screen replacement cost and unnecessary waste of resources.

[0003] Currently, most purifiers on the market are filtration type. The filtration purifier filters by adsorbing and filtering impurities and pollutants in the air through the filter screen. Since the air flow path of the fixed filter screen is constant, the specific area of the filter screen is prone to premature saturation due to long-term high-load adsorption, while the utilization rate of other areas is low, resulting in a shortened service life of the filter screen. Summary of the Invention

[0004] In view of the above problems, embodiments of the present invention are proposed to provide an air purifier, a filter screen control method for an air purifier, and a computer-readable storage medium that overcome the above problems or at least partially solve the above problems.

[0005] To solve the above problems, according to the first aspect of the embodiments of the present invention, an air purifier is provided. The air purifier includes a housing, a base, a filter screen, and a controller;

[0006] The filter screen is cylindrical;

[0007] A rotating mechanism is provided on the base, and the filter screen is disposed on the rotating mechanism;

[0008] The housing is disposed on the base and surrounds the filter screen. An air inlet area is provided on the side wall of the housing;

[0009] The rotating mechanism is used to drive the filter screen to rotate so that different areas of the filter screen correspond to the air inlet area;

[0010] The controller is used to obtain filter screen information; according to the filter screen information, control the rotating mechanism to rotate so that different areas of the filter screen correspond to the air inlet area of the housing.

[0011] Optionally, the filter screen includes an inner filter screen; the inner filter screen includes N sub-filter screens with arc surfaces; the rotating mechanism includes an inner rotating mechanism; the inner filter screen is disposed on the inner rotating mechanism;

[0012] The controller is configured to control the rotation of the inner rotating mechanism according to the filter screen information to switch the sub-filter screen corresponding to the air inlet area.

[0013] Optionally, the controller is configured to determine whether the air purifier meets the startup condition according to the filter screen information; the filter screen information includes the quantity and type of the sub-filter screens; the startup condition is that the quantity of the sub-filter screens is a preset quantity and the type of the sub-filter screens is a preset type; when it is determined that the startup condition is met, the air purifier is turned on.

[0014] Optionally, the N sub-filter screens include different types of sub-filter screens for filtering different air pollutants;

[0015] The controller is configured to obtain current air pollutant information; the current air pollutant information includes concentration values of multiple pollutants; determine a target pollutant according to the concentration values of the multiple pollutants; control the rotation of the inner rotating mechanism so that the sub-filter screen matching the target pollutant corresponds to the air inlet area.

[0016] Optionally, the N sub-filter screens include the same type of sub-filter screens for filtering the same air pollutant;

[0017] The controller is configured to obtain the usage duration of the N sub-filter screens being set to correspond to the air inlet area; control the rotation of the inner rotating mechanism according to the usage duration to switch the sub-filter screen corresponding to the air inlet area.

[0018] Optionally, the filter screen includes an outer filter screen; the filter screen information includes the usage duration of the outer filter screen; the rotating mechanism includes an outer rotating mechanism; the outer filter screen is disposed on the outer rotating mechanism;

[0019] The controller is configured to obtain the usage duration of the outer filter screen; control the rotation of the outer rotating mechanism according to the usage duration of the outer filter screen so that different areas of the outer filter screen correspond to the air inlet area.

[0020] Optionally, a radio frequency communication module is disposed on the base; a radio frequency communication tag is provided at the bottom of the inner filter screen;

[0021] The radio frequency communication module is configured to read the type of the inner filter screen from the radio frequency communication tag and send the type of the inner filter screen to the controller.

[0022] Optionally, it further includes: a connection mechanism disposed on the rotating mechanism, and the filter screen is connected to the connection mechanism.

[0023] Optionally, the connection mechanism includes an outer connection mechanism and an inner connection mechanism;

[0024] The outer connection mechanism is in an annular shape;

[0025] A rotating groove is provided on the inner wall of the outer ring of the outer connection mechanism; a rotating convex block is provided at the bottom of the outer edge of the outer filter screen;

[0026] The rotating convex block of the outer filter screen is connected in a matching manner with the rotating groove of the outer connection mechanism.

[0027] Optionally, the inner connection mechanism is in a circular shape;

[0028] An installation groove is provided on the inner connection mechanism; a label convex block is provided at the bottom of the inner filter screen;

[0029] The label convex block at the bottom of the inner filter screen is connected in a matching manner with the installation groove of the inner connection mechanism.

[0030] Optionally, a support boss is provided on the inner wall of the inner ring of the outer connection mechanism, and a support groove is provided on the support boss; a support convex block is provided on the outer wall of the inner connection mechanism;

[0031] The support convex block of the inner connection mechanism is connected in a matching manner with the support groove of the outer connection mechanism.

[0032] Optionally, an outer installation convex block is provided on the outer rotating mechanism; an inner installation convex block is provided on the inner rotating mechanism; an outer installation groove is provided on the outer connection mechanism; an inner installation groove is provided on the inner connection mechanism;

[0033] The outer installation convex block of the outer rotating mechanism is connected in a matching manner with the outer installation groove of the outer connection mechanism;

[0034] The inner installation convex block of the inner rotating mechanism is connected in a matching manner with the inner installation groove of the inner connection mechanism.

[0035] According to the second aspect of the embodiments of the present invention, there is provided a filter screen control method for an air purifier, which is applied to the air purifier as described in any one of the above, and the method includes:

[0036] Obtain filter screen information;

[0037] According to the filter screen information, control the rotating mechanism to rotate so that different areas of the filter screen correspond to the air inlet area of the housing.

[0038] Optionally, the filter screen includes an inner filter screen; the rotating mechanism includes an inner rotating mechanism; the inner filter screen is disposed on the inner rotating mechanism; the inner filter screen includes N sub-filter screens with arc surfaces; the step of controlling the rotating mechanism to rotate according to the filter screen information so that different regions of the filter screen correspond to the air inlet region of the housing includes:

[0039] Controlling the inner rotating mechanism to rotate according to the filter screen information to switch the sub-filter screen corresponding to the air inlet region.

[0040] Optionally, before controlling the rotating mechanism to rotate according to the filter screen information, it further includes:

[0041] Determining whether the air purifier meets the startup condition according to the filter screen information; the filter screen information includes the quantity and type of the sub-filter screens; the startup condition is that the quantity of the sub-filter screens is a preset quantity and the type of the sub-filter screens is a preset type;

[0042] When it is determined that the startup condition is met, turning on the air purifier.

[0043] Optionally, the step of controlling the inner rotating mechanism to rotate according to the filter screen information to switch the sub-filter screen corresponding to the air inlet region includes:

[0044] When the N sub-filter screens are of different types, obtaining the current air pollutant information; the current air pollutant information includes the concentration values of multiple pollutants;

[0045] Determining the target pollutant according to the concentration values of the multiple pollutants;

[0046] Controlling the inner rotating mechanism to rotate so that the sub-filter screen matching the target pollutant corresponds to the air inlet region; different types of sub-filter screens are used to filter different pollutants.

[0047] Optionally, the filter screen information includes the usage duration of the inner filter screen; the step of controlling the inner rotating mechanism to rotate according to the filter screen information to switch the sub-filter screen corresponding to the air inlet region includes:

[0048] When the N sub-filter screens are of the same type, obtaining the usage duration of the N sub-filter screens set to correspond to the air inlet region;

[0049] Controlling the inner rotating mechanism to rotate according to the usage duration of the N sub-filter screens to switch the sub-filter screen corresponding to the air inlet region.

[0050] Optionally, the filter screen includes an outer filter screen; the filter screen information includes the usage duration of the outer filter screen; the rotating mechanism includes an outer rotating mechanism; the outer filter screen is arranged on the outer rotating mechanism; the controlling the rotating mechanism to rotate according to the filter screen information so that different regions of the filter screen correspond to the air inlet region of the housing includes:

[0051] Obtaining the usage duration of the outer filter screen;

[0052] Controlling the outer rotating mechanism to rotate according to the usage duration of the outer filter screen so that different regions of the outer filter screen correspond to the air inlet region.

[0053] According to the third aspect of the embodiments of the present invention, there is provided an air purifier, including: a processor, a memory, and a computer program stored on the memory and capable of running on the processor, where when the computer program is executed by the processor, the steps of a filter screen control method of an air purifier as described in any one of the above are implemented.

[0054] According to the fourth aspect of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of a filter screen control method of an air purifier as described in any one of the above are implemented.

[0055] The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

[0056] The embodiments of the present invention provide an air purifier, which includes a housing, a base, a filter screen, and a controller; the filter screen is in a cylindrical shape; a rotating mechanism is arranged on the base, and the filter screen is arranged on the rotating mechanism; the housing is arranged on the base and surrounds the filter screen, and an air inlet region is provided on the side wall of the housing; the rotating mechanism is used to drive the filter screen to rotate so that different regions of the filter screen correspond to the air inlet region; the controller is used to obtain filter screen information; according to the filter screen information, the rotating mechanism is controlled to rotate so that different regions of the filter screen correspond to the air inlet region of the housing. By driving the filter screen to rotate through the rotating mechanism, the corresponding position between the filter screen and the air inlet region is dynamically adjusted, so that the surface load of the filter screen is evenly distributed, avoiding premature saturation caused by local high-load adsorption, enabling the filter screen to adsorb more evenly, improving the purification performance and efficiency, and prolonging the service life of the filter screen. Description of the Drawings

[0057] Figure 1 is a structural diagram of an air purifier provided by an embodiment of the present invention;

[0058] Figure 2 is a structural diagram of an inner filter screen of an air purifier provided by an embodiment of the present invention;

[0059] Figure 3 It is a structural diagram of a base of an air purifier provided by an embodiment of the present invention;

[0060] Figure 4 It is a structural diagram of an outer filter screen of an air purifier provided by an embodiment of the present invention;

[0061] Figure 5 It is a structural diagram of a connection mechanism of an air purifier provided by an embodiment of the present invention;

[0062] Figure 6 It is a structural diagram of an outer connection mechanism of an air purifier provided by an embodiment of the present invention;

[0063] Figure 7 It is a structural diagram of an inner connection mechanism of an air purifier provided by an embodiment of the present invention;

[0064] Figure 8 It is a step flowchart of a filter screen control method of an air purifier provided by an embodiment of the present invention.

[0065] Explanation of reference numerals:

[0066] Housing 101, base 102, filter screen 103, rotating mechanism 104, inner filter screen 1031, inner rotating mechanism 1041, outer filter screen 1032, outer rotating mechanism 1042, radio frequency communication module 1021, connection mechanism 105, outer connection mechanism 1051, inner connection mechanism 1052, rotating groove 10511, rotating protrusion 10321, installation groove 10521, label protrusion 10311, support groove 10512, support protrusion 10522, outer installation protrusion 10421, inner installation protrusion 10411, outer installation groove 10513, inner installation groove 10523. Detailed implementation manners

[0067] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0068] In the prior art, purifiers are mainly filter type. Filter type purifiers filter by adsorbing and filtering impurities and pollutants in the air through a filter screen. Since the air flow path of the fixed filter screen is constant, specific areas of the filter screen are prone to premature saturation due to long-term high-load adsorption, while the utilization rate of other areas is low, which will lead to a shortened service life of the filter screen.

[0069] One of the core concepts of the embodiments of the present invention is that the rotation mechanism drives the filter screen to rotate, dynamically adjusts the corresponding position between the filter screen and the air inlet area, evenly distributes the surface load of the filter screen, avoids premature saturation caused by local high-load adsorption, enables the filter screen to adsorb more evenly, improves the purification performance and efficiency, and prolongs the service life of the filter screen.

[0070] Refer to Figure 1 , which shows a structural diagram of an air purifier provided by an embodiment of the present invention. The air purifier includes a housing 101, a base 102, a filter screen 103, and a controller (not shown in the figure);

[0071] An air purifier is a device used to improve indoor air quality, mainly by filtering, adsorbing, decomposing, or killing pollutants in the air (such as particulate matter, formaldehyde, bacteria, odors, etc.).

[0072] The housing of the air purifier is not only part of the appearance design, but also directly affects the safety, durability, air duct efficiency, and user experience of the machine.

[0073] Although the design of the base of the air purifier is often overlooked, it directly affects the stability, mobility, shock absorption and noise reduction, and bottom air inlet efficiency of the machine. Its stability is used to prevent the machine from tipping over (especially important for tall bodies or pet families), and it can also reduce shock and noise to reduce the resonance noise between the fan and the ground during operation.

[0074] The filter screen is the core component of the air purifier and directly determines the purification effect. Different filter screens have different filtering effects on different pollutants. It usually includes a pre-filter for intercepting large particulate matter (hair, dust, willow catkins), and a high-efficiency particulate air (HEPA) filter for filtering PM2.5, pollen, bacteria (efficiency for 0.3μm particulate matter ≥ 99.97%). Some air purifiers also add additional functional filter screens to adsorb formaldehyde, volatile organic compounds (VOCs), and odors.

[0075] The controller is the "brain" of the air purifier, directly affecting the operation convenience, intelligence level, and purification efficiency. In this embodiment, it is used to obtain pollutant removal data and analyze it, and control the rotation of the rotation mechanism on the base.

[0076] The filter screen 103 is in a cylindrical shape;

[0077] In this embodiment, designing the filter screen in a cylindrical shape enables the filter screen to rotate in cooperation with the base. If the filter screen is designed in other shapes, it will be difficult to control the rotation, and the effective filtration area can also be increased to improve the purification efficiency. It is possible to support the separate replacement of the inner / outer layer filter screens (such as the outer primary HEPA and the inner layer filter screen). Users can customize and install the inner layer filter screen according to the usage environment and their own needs, or separately replace the failed filtration unit, reducing the cost of using the filter screen.

[0078] A rotation mechanism 104 can be provided on the base 102, and the filter screen 103 can be arranged on the rotation mechanism 104;

[0079] In this embodiment, a set of rotation mechanism is integrated on the base of the air purifier. This rotation mechanism can achieve the axial rotation movement of the filter screen. Specifically, it can achieve multi-angle free rotation of 0 - 360 degrees through the bottom control module. The filter screen is firmly installed on the rotation mechanism through a connecting piece. This dynamic installation method enables the filter screen to periodically change its orientation during the purification process, ensuring uniform dust accumulation on the air intake surface and extending the service life of the filter screen. This innovative design is particularly suitable for large space environments. By rotating, the purification coverage area is increased, and at the same time, the problem of local air flow dead angles caused by traditional fixed filter screens is avoided.

[0080] The housing 101 can be arranged on the base 102 and surround the filter screen 103. The side wall of the housing 101 is provided with an air inlet area;

[0081] In this embodiment, the housing of the air purifier is fixedly installed on the upper surface of the base, and the two are hermetically connected to ensure airtightness. The housing adopts an integral structure design and integrally wraps the internal filter screen. Arrayed air inlet areas are evenly distributed circumferentially on the side wall of the housing, which can control the air flow direction. In combination with the rotation mechanism on the base, on the one hand, it can make the pollutants adsorbed on different positions of the filter screen more uniform, and on the other hand, it can flexibly adjust the adsorption area of the filter screen, such as the position of the activated carbon layer filter screen or the formaldehyde decomposition net relative to the air inlet, so as to adapt to the purification requirements of different pollutants in different usage environments; particularly, there is a certain dynamic gap between the air inlet area and the filter screen, which increases the air intake speed.

[0082] The rotation mechanism 104 is used to drive the filter screen 103 to rotate so that different regions of the filter screen 103 correspond to the air inlet area;

[0083] In this embodiment, the rotation mechanism of the air purifier can achieve the axial rotation movement of the filter screen. Axial rotation refers to the rotational movement of an object around the central axis. By rotating the rotation mechanism to drive the filter screen to rotate, different regions of the filter screen can correspond to the air inlet area of the housing, effectively utilizing the adsorption area of the filter screen.

[0084] A controller for obtaining filter screen information; controlling the rotation of the rotating mechanism 104 according to the filter screen information so that different areas of the filter screen 103 correspond to the air inlet area of the housing 101.

[0085] In this embodiment, the controller serves as the control center of the air purifier. Using an intelligent control system, it obtains the full-dimensional state information of the filter screen in real time through multi-source sensors, radio frequency communication modules, etc. to achieve precise control. According to the filter screen information, it controls the rotation of the rotating mechanism so that different areas of the filter screen correspond to the air inlet area of the housing, and the overall filtration effect is higher than that of traditional fixed types.

[0086] Refer to Figure 2 , which shows the inner filter screen structure diagram of an air purifier provided by an embodiment of the present invention; refer to Figure 3 , which shows the base structure diagram of an air purifier provided by an embodiment of the present invention;

[0087] The filter screen 103 may include an inner filter screen 1031; the inner filter screen 1031 may include N sub-filter screens with arc surfaces; the rotating mechanism 104 may include an inner rotating mechanism 1041; the inner filter screen 1031 may be arranged on the inner rotating mechanism 1041;

[0088] In this embodiment, the user of the inner filter screen can customize the matching and installation according to the use environment and actual needs. The inner filter screen is composed of sub-filter screens and includes N sub-filter screens. The N sub-filter screens are used to absorb different air pollutants. The inner filter screen is cylindrical, and the arc surfaces of the N sub-filter screens are equally divided arc surfaces, where N is an integer greater than or equal to 2.

[0089] The inner filter screen is such as an activated carbon layer filter screen, a formaldehyde decomposition net, a bacteria and virus removal net, etc. There is a sponge above the top of the inner filter screen frame, which can effectively prevent air leakage. In this embodiment, hook-and-loop fasteners (Velcro) are provided on the side planes of each sub-filter screen. The first side is designed as a hook surface, and the second side is designed as a loop surface. When installing the inner filter screen, two sub-filter screens need to be spliced, that is, the hook surface of the first sub-filter screen is attached to the loop surface of the second sub-filter screen. Similarly, the loop surface of the first sub-filter screen is also attached to the hook surface of the second sub-filter screen, so as to combine the two sub-filter screens into a complete closed-loop filter screen, and then install the filter screen on the inner rotating mechanism.

[0090] A controller for controlling the rotation of the inner rotating mechanism 1041 according to the filter screen information to switch the sub-filter screen corresponding to the air inlet area.

[0091] In this embodiment, the state information of the inner filter screen is obtained in real time through multi-source sensors, radio frequency communication modules, etc. to achieve precise control. According to the filter screen information of the inner filter screen, the inner rotating mechanism is controlled to rotate so that different areas of the inner filter screen correspond to the air inlet area of the housing, improving the filtration effect of the inner filter screen.

[0092] A controller is configured to determine whether an air purifier meets the startup condition based on filter screen information; the filter screen information includes the number and type of sub - filters; the startup condition is that the number of sub - filters is a preset number and the type of sub - filters is a preset type; when it is determined that the startup condition is met, the air purifier is turned on.

[0093] In this embodiment, first, it is necessary to obtain the filter screen information of the sub - filters of the current inner - layer filter screen, mainly including the filter screen type, the number of filter screens, the filter screen life, the usage duration, the model, etc. Among them, by identifying the type of the filter screen, the working gear and startup safety of the air purifier can be determined; through the filter screen life, the usage duration, the model, the production date, and the batch information, etc., information such as the availability and purification speed of the filtering unit can be determined, to judge whether it meets the parameter requirements of the current air purifier, and at the same time, the life of the filtering unit can be recorded and predicted more accurately. Here, the inner - layer filter screen is taken as an example of an activated - carbon filtering unit and a formaldehyde - decomposition filtering unit. If the number of sub - filters of the current inner - layer filter screen is not 2, or if the type of sub - filters of the current inner - layer filter screen is not 1, situations such as the inner - layer filter screen being forgotten to be installed or the filter - screen radio - frequency communication label being damaged may occur, and at this time, the air purifier cannot be started normally.

[0094] N sub - filters may include different types of sub - filters for filtering different air pollutants; a controller is configured to obtain current air - pollutant information; the current air - pollutant information includes the concentration values of multiple pollutants; based on the concentration values of the multiple pollutants, a target pollutant is determined; the inner - layer rotating mechanism 1041 is controlled to rotate so that the sub - filter matching the target pollutant corresponds to the air - inlet area.

[0095] In this embodiment, the sub - filters of the inner - layer filter screen may be different types of sub - filters for filtering different air pollutants, such as activated - carbon - layer filter screens, formaldehyde - decomposition nets, antibacterial and antiviral nets, etc.

[0096] It is necessary to obtain the current situation of air pollutants, and multiple sensors are used to detect the concentration of pollutants such as formaldehyde and organic compounds in the air. If the number of types of the inner - layer filtering unit of the current air purifier is greater than 1, the air purifier defaults to the intelligent mode. At this time, the air purifier can adjust the optimal working gear in a timely manner according to the type and content of the current air pollutants, without the need for manual adjustment by the user.

[0097] For example, taking the activated carbon layer filter screen and the formaldehyde decomposition screen for analysis, if both the formaldehyde concentration and the VOC concentration in the current air are greater than their respective preset concentration thresholds, or both the formaldehyde concentration and the VOC concentration are less than their respective preset concentration thresholds, the working gear of the air purifier is adjusted to the all-round gear, and the gear information can be displayed on the color screen, controlling the inner rotating mechanism to rotate, driving the inner filter screen to rotate and adjust so that the activated carbon sub-filter screen and the formaldehyde decomposition sub-filter screen are evenly distributed on the left and right relative to the air inlet position. If the formaldehyde concentration in the current air is greater than the preset formaldehyde concentration threshold and the VOC concentration is less than the preset VOC concentration threshold, the working gear of the air purifier is adjusted to the formaldehyde removal gear, controlling the inner rotating mechanism to rotate, driving the inner filter screen to rotate and adjust to the position where the formaldehyde decomposition sub-filter screen is directly facing the air inlet; similarly, if the VOC concentration in the current air is greater than the preset VOC concentration threshold and the formaldehyde concentration is less than the preset formaldehyde concentration threshold, the working gear of the air purifier is adjusted to the odor removal gear, and at this time the inner filter screen rotates and adjusts to the position where the activated carbon sub-filter screen is directly facing the air inlet.

[0098] The adjustment logic of the working gear of the air purifier can also be optimized according to the relationship between the formaldehyde concentration and the VOC concentration in the current air to ensure more energy-saving and efficient air purification. It is also possible to enter the manual mode by short pressing the mode switching key and switch between three different working modes. In the manual mode, the working gear will remain unchanged after switching. If you want to re-enter the intelligent mode, just long press the mode switching key.

[0099] After the working gear is determined, the air volume of the air purifier can be adjusted. When the air purifier is working, data such as the service life and usage duration of the filter screen are updated per unit time. The specific service life of the inner filter screen can be calculated according to the current pollutant concentration, working gear, wind speed, etc. At the same time, data such as the inner filter screen life and usage duration are written every 1 hour. After shutdown, the data such as the inner filter screen life and usage duration need to be written again. In addition, to ensure the uniformity of pollutant adsorption on the filter screen, when the air purifier is working and the current working gear is the all-round gear, the inner rotating mechanism is controlled to drive the inner filter screen to rotate 180° every 1 hour.

[0100] The N sub-filter screens can include the same type of sub-filter screens for filtering the same air pollutants; a controller for obtaining the usage duration of the N sub-filter screens set for the corresponding air inlet area; and controlling the inner rotating mechanism 1041 to rotate according to the usage duration to switch the sub-filter screen corresponding to the air inlet area.

[0101] In this embodiment, the sub-filter screens of the inner filter screen can be the same type of sub-filter screens for filtering the same air pollutants. For example, the inner filter screens are all activated carbon layer filter screens, or formaldehyde decomposition screens, or antibacterial and antiviral screens, etc.

[0102] The information of the inner filter includes the type of the filter. When the type of the sub-filter of the inner filter of the current air purifier is 1, the working gear of the air purifier is determined by the sub-filter of the inner filter, and the type of the working gear is single and fixed. The air purifier identifies the type of the sub-filter of the inner filter and provides selectable working gears. If the types of the sub-filters of the two inner filters are the same, then there is only one working gear, which can be the formaldehyde removal gear, the odor removal gear, the antibacterial and disinfection gear, or the formaldehyde and odor removal (double-layer composite inner filter unit) gear.

[0103] After the working gear is determined, the air volume of the air purifier can be adjusted. When the air purifier is working, data such as the service life and usage duration of the filter are updated per unit time. The service life of the inner filter can be specifically calculated according to the current pollutant concentration, working gear, wind speed, etc. At the same time, data such as the inner filter life and usage duration are written every 1 hour, and after shutdown, the data such as the inner filter life and usage duration need to be written again. In addition, to ensure the uniformity of pollutant adsorption on the filter, when the air purifier is working and the type of the sub-filter of the inner filter is 1, the inner rotation mechanism is controlled to drive the inner filter to rotate 90° every 1 hour.

[0104] Refer to Figure 4 , which shows the structure diagram of the outer filter of an air purifier provided by an embodiment of the present invention;

[0105] The filter 103 may include an outer filter 1032; the filter information may include the usage duration of the outer filter; the rotation mechanism 104 may include an outer rotation mechanism 1042; the outer filter 1032 may be disposed on the outer rotation mechanism 1042;

[0106] The outer filter is mainly a primary filter and a HEPA filter. The primary filter is mainly used to filter large particles such as dust and hair, and the HEPA filter is mainly responsible for capturing PM2.5 particles in the air. A sponge is provided on the top cover of the outer filter to prevent air leakage.

[0107] The outer filter can be a composite integrated type or a disassembly integrated type, and the two need to be integrated on the outer filter. Since the primary filter can be reused after cleaning, the outer filter is installed by a detachable installation method. The air purifier identifies the adsorption condition of the outer primary filter through a wind pressure sensor, and then reminds the user to disassemble, clean or replace the primary filter in time.

[0108] The controller is used to obtain the usage duration of the outer filter; according to the usage duration of the outer filter, control the outer rotation mechanism 1042 to rotate so that different regions of the outer filter 1032 correspond to the air inlet region.

[0109] In this embodiment, after the air purifier is normally started, the filter information of the outer filter is obtained, including the usage duration of the outer filter. During the operation of the air purifier, according to the usage duration of the outer filter, the outer rotation mechanism is controlled to rotate, driving the outer filter to rotate 90° every 1 hour.

[0110] When the air purifier is in operation, data such as the service life and usage duration of the filter are updated per unit time, and the outer filter information is updated on the local storage module of the air purifier; after shutdown, the outer filter information such as the service life and usage duration of the inner filter also needs to be locally updated again.

[0111] A radio frequency communication module 1021 may be provided on the base 102; a radio frequency communication tag may be provided at the bottom of the inner filter 1031; the radio frequency communication module 1021 is used to read the type of the inner filter 1031 from the radio frequency communication tag and send the type of the inner filter 1031 to the controller.

[0112] In this embodiment, two relatively symmetric radio frequency communication modules are distributed on the base. By matching the radio frequency communication tags under different inner filter bases, the reading and writing of filter information data are realized. Optionally, the radio frequency communication technology can adopt Near Field Communication (NFC) or Radio Frequency Identification (RFID) technology. Optionally, when the air purifier is connected to WIFI, the filter number and its information data can also be synchronized to the cloud, and users can more conveniently and quickly query the usage status of each filter on the mobile APP.

[0113] By adopting radio frequency communication technology to realize the identification, reading and writing of different filter information data, it is convenient for users to manage the inner filter conveniently. The base is equipped with a radio frequency communication module for reading and writing filter information data, and a radio frequency communication tag is installed at the bottom of each sub-filter of the inner filter for storing filter data, including but not limited to filter type, manufacturer, date and batch, as well as filter life, usage duration and the model used, etc. information. The base can automatically identify the filter type and then switch to the corresponding working gear, and at the same time, it can also update and write information such as filter life and usage duration, avoiding the loss of filter information data caused by users adjusting different types of filters.

[0114] Refer to Figure 5 , which shows the structural diagram of the connection mechanism of an air purifier provided by an embodiment of the present invention;

[0115] The air purifier may further include: a connection mechanism 105 disposed on the rotation mechanism 104, and the filter screen 103 is connected to the connection mechanism 105. The connection mechanism 105 may include an outer connection mechanism 1051 and an inner connection mechanism 1052;

[0116] In this embodiment, the rotation mechanism on the base is mainly used to carry the connection mechanism and the filter screen, and support the rotation of the filter screen. The filter screen is arranged on the rotation mechanism through this connection mechanism. The outer connection mechanism is used to install the outer filter screen, and the inner connection mechanism is a compartmentalized structure and can install two kinds of the same type or different types of sub-filter screens.

[0117] Refer to Figure 7 , which shows a structural diagram of the outer connection mechanism of an air purifier provided by an embodiment of the present invention;

[0118] The outer connection mechanism 1051 is in a circular ring shape; a rotation groove 10511 may be provided on the inner wall of the outer ring of the outer connection mechanism 1051; a rotation protrusion 10321 may be provided at the bottom of the outer edge of the outer filter screen 1032; the rotation protrusion 10321 of the outer filter screen 1032 is in mating connection with the rotation groove 10511 of the outer connection mechanism 1051.

[0119] In this embodiment, the outer connection mechanism is in a circular ring shape, and a rotation groove is provided on the inner wall of the outer ring of the outer connection mechanism for matching with the rotation protrusion on the bottom of the outer filter screen. When installing the outer filter screen, after the rotation protrusion on the outer filter screen is inserted into the rotation groove on the outer connection mechanism, the rotation protrusion is rotated clockwise relative to the rotation groove to complete the installation and fixation of the outer filter screen on the outer connection mechanism.

[0120] Refer to Figure 7 , which shows a structural diagram of the inner connection mechanism of an air purifier provided by an embodiment of the present invention;

[0121] The inner connection mechanism 1052 is in a circular shape; an installation groove 10521 may be provided on the inner connection mechanism 1052; a label protrusion 10311 may be provided at the bottom of the inner filter screen 1031; the label protrusion 10311 at the bottom of the inner filter screen 1031 is in mating connection with the installation groove 10521 of the inner connection mechanism 1052.

[0122] In this embodiment, the inner connection mechanism is in a circular shape, and the inner connection mechanism is a compartmentalized structure and can install two kinds of the same type or different types of sub-filter screens. There are two symmetrically distributed radio frequency communication label installation grooves on the inner connection mechanism. A label protrusion is provided at the bottom of the inner filter screen, and the label protrusion at the bottom of the inner filter screen is in mating connection with the installation groove of the inner connection mechanism to install the radio frequency communication label on the inner filter screen, so as to realize the effective identification and writing of the radio frequency communication module on the base to the radio frequency communication label on the inner filter screen.

[0123] On the inner wall of the inner ring of the outer connection mechanism 1051, there may be provided a supporting boss, and on the supporting boss, there may be provided a supporting groove 10512; on the outer wall of the inner connection mechanism 1052, there may be provided a supporting protrusion 10522; the supporting protrusion 10522 of the inner connection mechanism 1052 is connected in cooperation with the supporting groove 10512 of the outer connection mechanism 1051.

[0124] In this embodiment, the outer connection mechanism is provided with a supporting boss for installing the inner connection mechanism, and the supporting groove on the supporting boss is used to limit the position of the inner filter tray on the outer filter tray, ensuring that the bottoms of the outer connection mechanism and the inner connection mechanism are collinear after the outer connection mechanism and the inner connection mechanism are installed.

[0125] The supporting protrusion on the inner connection mechanism and the supporting groove on the supporting boss of the outer connection mechanism cooperate to control the relative position of the inner and outer filter trays to remain unchanged. When the outer connection mechanism and the inner connection mechanism are installed on the rotating mechanism of the base, the inner connection mechanism rises, the installation protrusion is separated from the supporting groove, and the outer connection mechanism and the inner connection mechanism can realize independent rotating functions.

[0126] On the outer rotating mechanism 1042, there may be provided an outer installation protrusion 10421; on the inner rotating mechanism 1041, there may be provided an inner installation protrusion 10411; on the outer connection mechanism 1051, there may be provided an outer installation groove 10513; on the inner connection mechanism 1052, there may be provided an inner installation groove 10523;

[0127] The outer installation protrusion 10421 of the outer rotating mechanism 1042 is connected in cooperation with the outer installation groove 10513 of the outer connection mechanism 1051;

[0128] The inner installation protrusion 10411 of the inner rotating mechanism 1041 is connected in cooperation with the inner installation groove 10523 of the inner connection mechanism 1052.

[0129] In this embodiment, the rotating mechanism on the base is mainly used to carry the connection mechanism and support the rotation of the filter, the outer rotating mechanism is mainly used to carry the outer connection mechanism, and the inner rotating mechanism is mainly used to carry the inner connection mechanism. Components such as guiding protrusions, limiting baffles, outer rotating mechanisms, and inner rotating mechanisms are provided on the base. Among them, the guiding protrusions are used to assist in the installation and disassembly of the outer connection mechanism and the inner connection mechanism, and the limiting baffles are used to assist in the positioning of the outer connection mechanism and the inner connection mechanism.

[0130] The outer rotating mechanism is provided with outer mounting bumps, and the outer connecting mechanism is provided with outer mounting grooves. The outer mounting bumps of the outer rotating mechanism are cooperatively connected with the outer mounting grooves of the outer connecting mechanism to limit the positions of the outer connecting mechanism and the corresponding outer filter screen. Particularly, when installing or disassembling the outer connecting mechanism, the outer rotating mechanism needs to be reset to the position where the outer mounting bumps on the outer rotating mechanism are collinear with the guiding bumps, so as to facilitate the installation and disassembly of the outer connecting mechanism.

[0131] Correspondingly, the inner rotating mechanism is used to carry the inner connecting mechanism, and the inner rotating mechanism is an elastic rotating mechanism, which plays a role in lifting the inner connecting mechanism. It not only helps to form a better seal between the filter screen and the interior of the device to avoid air leakage, but also can separate the outer connecting mechanism and the inner connecting mechanism to realize the function of independent rotation of the outer connecting mechanism and the inner connecting mechanism. There are corresponding inner mounting bumps on the inner rotating mechanism, which cooperate with the inner mounting grooves at the bottom of the inner connecting mechanism to limit the positions of the inner connecting mechanism and the sub-filter screens of the corresponding inner filter screen. Similarly, when installing or disassembling the inner connecting mechanism, the inner rotating mechanism needs to be reset to the position where the inner mounting bumps on the inner rotating mechanism are collinear with the guiding bumps, so as to facilitate the installation and disassembly of the inner connecting mechanism.

[0132] At the same time, there are two inclined surfaces on the inner rotating mechanism for the auxiliary installation of the connecting mechanism. During the installation process of the connecting mechanism, when the outer connecting mechanism passes through the inclined surface, it presses down the inner rotating mechanism, causing the inner rotating mechanism to move downward. When the outer connecting mechanism is installed in place, the inner rotating mechanism pops up to lift the inner connecting mechanism, ensuring the sealing between the filter screen and the interior of the device while supporting the independent rotation of the inner and outer filter screens.

[0133] An embodiment of the present invention provides an air purifier, which includes a housing, a base, a filter screen and a controller; the filter screen is in a cylindrical shape; a rotating mechanism is provided on the base, and the filter screen is arranged on the rotating mechanism; the housing is arranged on the base and surrounds the filter screen, and an air inlet area is provided on the side wall of the housing; the rotating mechanism is used to drive the filter screen to rotate so that different areas of the filter screen correspond to the air inlet area; the controller is used to obtain filter screen information; according to the filter screen information, control the rotating mechanism to rotate so that different areas of the filter screen correspond to the air inlet area of the housing. By driving the filter screen to rotate through the rotating mechanism, dynamically adjusting the corresponding position between the filter screen and the air inlet area, the surface load of the filter screen is evenly distributed, avoiding premature saturation caused by local high-load adsorption, enabling the filter screen to adsorb more evenly, improving the purification performance and efficiency while prolonging the service life of the filter screen.

[0134] It should be noted that for the embodiments of the present invention, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the embodiments of the present invention are not limited by the described action sequence, because according to the embodiments of the present invention, some steps can be carried out in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily essential for the embodiments of the present invention.

[0135] Referring to Figure 8 , a step flowchart of a filter control method for an air purifier provided by an embodiment of the present invention is shown; the method includes:

[0136] Step 201, obtaining filter information;

[0137] Step 202, controlling the rotation mechanism to rotate according to the filter information so that different regions of the filter correspond to the air inlet region of the housing.

[0138] The filter includes an inner filter; the rotation mechanism includes an inner rotation mechanism; the inner filter is arranged on the inner rotation mechanism; the inner filter includes N sub-filters with arc surfaces; step 202 includes the following sub-steps:

[0139] Controlling the inner rotation mechanism to rotate according to the filter information to switch the sub-filter corresponding to the air inlet region.

[0140] Before controlling the rotation mechanism to rotate according to the filter information, it further includes:

[0141] Determining whether the air purifier meets the start-up condition according to the filter information; the filter information includes the quantity and type of the sub-filters; the start-up condition is that the quantity of the sub-filters is a preset quantity and the type of the sub-filters is a preset type;

[0142] When it is determined that the start-up condition is met, starting the air purifier.

[0143] The controlling the inner rotation mechanism to rotate according to the filter information to switch the sub-filter corresponding to the air inlet region includes:

[0144] When the N sub-filters are of different types, obtaining the current air pollutant information; the current air pollutant information includes the concentration values of multiple pollutants;

[0145] Determining the target pollutant according to the concentration values of the multiple pollutants;

[0146] Control the rotation of the inner layer rotating mechanism so that the sub-filter matching the target pollutant corresponds to the air inlet area; different types of sub-filters are used to filter different pollutants.

[0147] The filter screen information includes the usage duration of the inner layer filter screen; the controlling the rotation of the inner layer rotating mechanism according to the filter screen information to switch the sub-filter corresponding to the air inlet area includes:

[0148] When the N sub-filters are of the same type, obtain the usage duration of the N sub-filters set to correspond to the air inlet area;

[0149] Control the rotation of the inner layer rotating mechanism according to the usage duration of the N sub-filters to switch the sub-filter corresponding to the air inlet area.

[0150] The filter screen includes an outer layer filter screen; the filter screen information includes the usage duration of the outer layer filter screen; the rotating mechanism includes an outer layer rotating mechanism; the outer layer filter screen is arranged on the outer layer rotating mechanism; the controlling the rotation of the rotating mechanism according to the filter screen information so that different areas of the filter screen correspond to the air inlet area of the housing includes:

[0151] Obtain the usage duration of the outer layer filter screen;

[0152] Control the rotation of the outer layer rotating mechanism according to the usage duration of the outer layer filter screen so that different areas of the outer layer filter screen correspond to the air inlet area.

[0153] An embodiment of the present invention provides an air purifier, which includes a housing, a base, a filter screen and a controller; the filter screen is cylindrical; a rotating mechanism is arranged on the base, and the filter screen is arranged on the rotating mechanism; the housing is arranged on the base and surrounds the filter screen, and an air inlet area is provided on the side wall of the housing; the rotating mechanism is used to drive the filter screen to rotate so that different areas of the filter screen correspond to the air inlet area; the controller is used to obtain filter screen information; according to the filter screen information, control the rotation of the rotating mechanism so that different areas of the filter screen correspond to the air inlet area of the housing. By driving the filter screen to rotate through the rotating mechanism, dynamically adjust the corresponding position of the filter screen and the air inlet area, make the surface load of the filter screen evenly distributed, avoid premature saturation caused by local high-load adsorption, can make the adsorption of the filter screen more uniform, improve the purification performance and efficiency while prolonging the service life of the filter screen.

[0154] For the method embodiment, since it is basically similar to the system embodiment, it is described relatively simply, and the relevant parts can refer to the partial description of the method embodiment.

[0155] An embodiment of the present invention further provides an air purifier, including: a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is executed by the processor, it implements each process of the above-mentioned embodiment of the filter control method of an air purifier and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0156] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements each process of the above-mentioned embodiment of the filter control method of an air purifier and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0157] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0158] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a device, or a computer program product. Therefore, the embodiments of the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0159] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the processes and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal devices generate a device for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0160] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured product including an instruction device, and the instruction device implements the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1The functions specified in one or more boxes.

[0161] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, so that a series of operation steps are executed on the computer or other programmable terminal device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable terminal device provide for implementing the steps of the functions specified in one process or more processes and / or boxes Figure 1 One process or more processes and / or boxes Figure 1 The steps of the functions specified in one box or more boxes.

[0162] Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0163] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the element.

[0164] The above has introduced in detail an air purifier and a filter control method for an air purifier provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An air purifier, characterized in that, The air purifier includes a housing, a base, a filter screen, and a controller; The filter screen is cylindrical; the filter screen includes an inner filter screen and an outer filter screen; the inner filter screen includes N sub-filter screens with equally divided arc surfaces; N is an integer greater than or equal to 2; the inner filter screen is obtained by splicing at least two sub-filter screens; A rotating mechanism is provided on the base, and the filter screen is arranged on the rotating mechanism; the rotating mechanism includes an inner rotating mechanism and an outer rotating mechanism; the inner filter screen is arranged on the inner rotating mechanism; the outer filter screen is arranged on the outer rotating mechanism; The housing is arranged on the base and surrounds the filter screen, and a partial area of the side wall of the housing is an air inlet area; The rotating mechanism is used to drive the inner filter screen to rotate through the inner rotating mechanism so that different areas of the inner filter screen correspond to the air inlet area, and drive the outer filter screen to rotate through the outer rotating mechanism so that different areas of the outer filter screen correspond to the air inlet area; The controller is used to obtain filter screen information; when the filter screen information indicates that the N sub-filter screens with arc surfaces include different types of sub-filter screens for filtering different air pollutants, after the air purifier is turned on, obtain current air pollutant information; the current air pollutant information includes concentration values of multiple pollutants; Determine a target pollutant according to the concentration values of the multiple pollutants; control the inner rotating mechanism to rotate so that the sub-filter screen matching the target pollutant corresponds to the air inlet area.

2. The air purifier according to claim 1, wherein The controller is used to determine whether the air purifier meets the startup condition according to the filter screen information; the filter screen information includes the number and type of the sub-filter screens; the startup condition is that the number of the sub-filter screens is a preset number and the type of the sub-filter screens is a preset type; when it is determined that the startup condition is met, turn on the air purifier.

3. The air purifier according to claim 2, characterized in that The N sub-filter screens with arc surfaces include the same type of sub-filter screens for filtering the same air pollutants; The controller is used to obtain the usage duration of the N sub-filter screens being set to correspond to the air inlet area; according to the usage duration, control the inner rotating mechanism to rotate to switch the sub-filter screen corresponding to the air inlet area.

4. The air purifier according to claim 2, wherein The filter screen information includes the usage duration of the outer filter screen; The controller is used to obtain the usage duration of the outer filter screen; according to the usage duration of the outer filter screen, control the outer rotating mechanism to rotate so that different areas of the outer filter screen correspond to the air inlet area.

5. The air purifier according to claim 2, wherein A radio frequency communication module is provided on the base; a radio frequency communication tag is provided at the bottom of the inner filter screen; The radio frequency communication module is used to read the type of the inner filter screen from the radio frequency communication tag and send the type of the inner filter screen to the controller.

6. The air purifier according to claim 4, wherein Further included: A connecting mechanism arranged on the rotating mechanism, and the filter screen is connected to the connecting mechanism.

7. The air purifier according to claim 6, characterized in that, The connecting mechanism includes an outer connecting mechanism and an inner connecting mechanism; The outer connection mechanism is annular; A rotating groove is provided on the inner wall of the outer ring of the outer connection mechanism; a rotating convex block is provided at the bottom of the outer edge of the outer filter screen; The rotating convex block of the outer filter screen is connected in a matching manner with the rotating groove of the outer connection mechanism.

8. The air purifier according to claim 7, wherein The inner connection mechanism is circular; An installation groove is provided on the inner connection mechanism; a label convex block is provided at the bottom of the inner filter screen; The label convex block at the bottom of the inner filter screen is connected in a matching manner with the installation groove of the inner connection mechanism.

9. The air purifier according to claim 7, wherein A support boss is provided on the inner wall of the inner ring of the outer connection mechanism, and a support groove is provided on the support boss; a support convex block is provided on the outer wall of the inner connection mechanism; The support convex block of the inner connection mechanism is connected in a matching manner with the support groove of the outer connection mechanism.

10. The air purifier according to claim 7, wherein An outer installation convex block is provided on the outer rotation mechanism; an inner installation convex block is provided on the inner rotation mechanism; an outer installation groove is provided on the outer connection mechanism; an inner installation groove is provided on the inner connection mechanism; The outer installation convex block of the outer rotation mechanism is connected in a matching manner with the outer installation groove of the outer connection mechanism; The inner installation convex block of the inner rotation mechanism is connected in a matching manner with the inner installation groove of the inner connection mechanism.

11. A filter control method for an air purifier, characterized in that, Applied to the air purifier according to any one of claims 1-10, the method includes: Obtaining filter screen information; the filter screen includes an inner filter screen and an outer filter screen; the rotation mechanism includes an inner rotation mechanism and an outer rotation mechanism; the inner filter screen is arranged on the inner rotation mechanism; the outer filter screen is arranged on the outer rotation mechanism; the inner filter screen includes N sub-filter screens with equally divided arc surfaces; N is an integer greater than or equal to 2; the inner filter screen is obtained by splicing at least two sub-filter screens; According to the filter screen information, controlling the rotation of the rotation mechanism so that different areas of the filter screen correspond to the air inlet area of the housing; driving the inner filter screen to rotate through the inner rotation mechanism so that different areas of the inner filter screen correspond to the air inlet area, and driving the outer filter screen to rotate through the outer rotation mechanism so that different areas of the outer filter screen correspond to the air inlet area; The controlling the rotation of the rotation mechanism according to the filter screen information so that different areas of the filter screen correspond to the air inlet area of the housing includes: When the filter screen information indicates that the N sub-filter screens with arc surfaces include different types of sub-filter screens for filtering different air pollutants, after the air purifier is turned on, obtaining current air pollutant information; the current air pollutant information includes concentration values of multiple pollutants; Determining a target pollutant according to the concentration values of the multiple pollutants; Controlling the inner rotation mechanism to rotate so that the sub-filter screen matching the target pollutant corresponds to the air inlet area.

12. The filter control method of the air purifier according to claim 11, characterized in that, Before controlling the rotation of the rotation mechanism according to the filter screen information, it further includes: Determine whether the air purifier meets the startup condition according to the filter screen information; the filter screen information includes the quantity and type of the sub-filter screens; the startup condition is that the quantity of the sub-filter screens is a preset quantity and the type of the sub-filter screens is a preset type; When it is determined that the startup condition is met, turn on the air purifier.

13. The filter screen control method of the air purifier according to claim 12, characterized in that the filter screen information includes the usage duration of the inner filter screen; the controlling the rotation mechanism to rotate according to the filter screen information so that different areas of the filter screen correspond to the air inlet area of the housing includes: When the N sub-filter screens with arc surfaces are of the same type, obtain the usage duration of the N sub-filter screens with arc surfaces that are set to correspond to the air inlet area; Control the inner layer rotation mechanism to rotate according to the usage duration of the N sub-filter screens with arc surfaces so as to switch the sub-filter screen corresponding to the air inlet area.

14. The filter control method of the air purifier according to claim 12, wherein The filter screen information includes the usage duration of the outer filter screen; the controlling the rotation mechanism to rotate according to the filter screen information so that different areas of the filter screen correspond to the air inlet area of the housing includes: Obtain the usage duration of the outer filter screen; Control the outer layer rotation mechanism to rotate according to the usage duration of the outer filter screen so that different areas of the outer filter screen correspond to the air inlet area.

15. An air purifier, characterized in that, including: A processor, a memory, and a computer program stored on the memory and capable of running on the processor, and when the computer program is executed by the processor, the steps of a filter screen control method of an air purifier as described in any one of claims 11-14 are implemented.

16. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor, the steps of a filter screen control method of an air purifier as described in any one of claims 11-14 are implemented.

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