Air purifier control method, control device and computer-readable storage medium

Abstract

The present invention relates to the technical field of air purifiers, and more specifically to a control method, control device, and computer-readable storage medium for an air purifier. The air purifier includes a filter and a photocatalytic module, wherein the photocatalytic module acts on the filter. The control method comprises: obtaining the filter lifespan; determining whether the filter lifespan is less than a first preset value; and activating the photocatalytic module when the filter lifespan is less than the first preset value. This control method can prevent the filter from generating odors, extend the filter lifespan, and reduce the cost of frequent filter replacements.

Description

Technical Field

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

[0002] With the rapid development of my country's economy, people have increasingly stringent requirements for indoor office and residential environments, and have placed extremely high demands on indoor air quality. Currently, air purifiers are primarily used to purify indoor air to improve office and residential environments. Formaldehyde (HCHO) is a common volatile organic compound in indoor air and poses a serious health hazard. Therefore, the removal and treatment of formaldehyde pollution in indoor air is of great research significance. Currently, the filters used in air purifiers are primarily carbon-clad cloth. However, carbon-clad cloth has the disadvantages of producing odor and secondary pollution after adsorption saturation. As a result, the filter has a short service life and requires frequent replacement. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the low service life of the filter of the air purifier in the prior art, thereby providing a control method, a control device and a computer-readable storage medium for the air purifier that can extend the service life of the filter.

[0004] In order to solve the above technical problems, the present invention provides a control method for an air purifier, wherein the air purifier includes a filter and a photocatalytic module, and the photocatalytic module can act on the filter. The control method includes: obtaining the service life of the filter; judging whether the service life of the filter is less than a first preset value; when the service life of the filter is less than the first preset value, turning on the photocatalytic module.

[0005] Optionally, when the service life of the filter is less than the first preset value, turning on the photocatalytic module includes: if the service life of the filter is in a first preset interval, making the photocatalytic module work in a first mode, the first preset interval is less than the first preset value and greater than the second preset value; if the service life of the filter is in a second preset interval, making the photocatalytic module work in a second mode, the second preset interval is less than or equal to the second preset value, and the total working time of the second mode is greater than the total working time of the first mode.

[0006] Optionally, the first mode is to work for a first time period and then stop working for a second time period, and then work for a third time period after stopping working for the second time period.

[0007] Optionally, the second mode is to work for a fourth duration and then stop working for a fifth duration, and then work for a sixth duration after stopping working for the fifth duration.

[0008] Optionally, the control method further includes: acquiring air humidity; determining whether the air humidity is greater than a third preset value; and turning on the photocatalytic module when the air humidity is greater than the third preset value.

[0009] Optionally, when the air humidity is greater than the third preset value, turning on the photocatalytic module includes: if the air humidity is in a third preset interval, making the photocatalytic module operate in the first mode, and the third preset interval is greater than the third preset value and less than the fourth preset value; if the air humidity is in a fourth preset interval, making the photocatalytic module operate in the second mode, and the fourth preset interval is greater than or equal to the fourth preset value.

[0010] The present invention also provides a control device for an air purifier, which includes a filter and a photocatalytic module. The photocatalytic module can act on the filter. The control device includes: a first acquisition module for obtaining the service life of the filter; a first judgment module for judging whether the service life of the filter is less than a first preset value; and a first execution module for turning on the photocatalytic module when the service life of the filter is less than the first preset value.

[0011] Optionally, the first execution module includes: a first execution sub-module, used to enable the photocatalytic module to operate in a first mode when the service life of the filter is in a first preset interval, and the first preset interval is less than a first preset value and greater than a second preset value; a second execution sub-module, used to enable the photocatalytic module to operate in a second mode when the service life of the filter is in a second preset interval, and the second preset interval is less than or equal to a second preset value, and the total working time of the second mode is greater than the total working time of the first mode.

[0012] Optionally, the control device further includes: a second acquisition module for acquiring air humidity; a second judgment module for judging whether the air humidity is greater than a third preset value; and a second execution module for turning on the photocatalytic module when the air humidity is greater than the third preset value.

[0013] Optionally, the second execution module includes: a third execution submodule, used to enable the photocatalytic module to operate in the first mode when the air humidity is in a third preset interval, and the third preset interval is greater than the third preset value and less than the fourth preset value; a fourth execution submodule, used to enable the photocatalytic module to operate in the second mode when the air humidity is in a fourth preset interval, and the fourth preset interval is greater than or equal to the fourth preset value.

[0014] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the control method.

[0015] The technical solution of the present invention has the following advantages:

[0016] The control method of the air purifier provided by the present invention is that when the service life of the filter is less than the first preset value, it means that the filter has been used for a period of time, and bacteria and formaldehyde are adsorbed on the filter. As the cumulative use time of the filter gradually increases, the bacteria and formaldehyde adsorbed on the filter will increase. If not treated, odor will be generated, and secondary pollution will occur after adsorption saturation. Therefore, the photocatalytic module is turned on. The photocatalytic module produces strong oxidizing free radicals and other active oxygen substances to first destroy the cell walls of microorganisms, causing oxidative damage to the cell membrane and intracellular metabolites and genetic material, and ultimately leading to the death of microbial cells on the filter. It can also photolyze formaldehyde and oxidize the formaldehyde adsorbed on the filter into carbon dioxide and water. Therefore, it can prevent the filter from generating odor, and at the same time can extend the life of the filter and reduce the cost of frequent filter replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a flow chart of the control method of the air purifier provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0022] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] Example 1

[0024] With the rapid development of my country's economy, people have increasingly stringent requirements for indoor office and residential environments, and have placed extremely high demands on indoor air quality. Currently, air purifiers are primarily used to purify indoor air to improve office and residential environments. Formaldehyde (HCHO) is a common volatile organic compound in indoor air and poses a serious health hazard. Therefore, the removal and treatment of formaldehyde pollution in indoor air is of great research significance. Currently, the filters used in air purifiers are primarily carbon-clad cloth. However, carbon-clad cloth has the disadvantages of producing odor and secondary pollution after adsorption saturation. As a result, the filter has a short service life and requires frequent replacement.

[0025] To this end, this embodiment provides a control method for an air purifier, wherein the air purifier includes a filter and a photocatalytic module, wherein the photocatalytic module can act on the filter. Specifically, the filter can be a carbon cloth that can absorb bacteria and formaldehyde in the air, and the photocatalytic module is TiO2.

[0026] In one embodiment, the control method comprises the following steps:

[0027] S1. Obtain the filter lifespan. Specifically, the filter lifespan is the remaining service life of the filter, which can be calculated based on the cumulative operating hours of the air purifier. More specifically, a service life timing sensor can be provided to calculate the cumulative operating hours, and the filter lifespan is then calculated by subtracting the cumulative operating hours from the total lifespan of the filter.

[0028] S2. Determine whether the service life of the filter is less than a first preset value. Specifically, the first preset value may be 80% of the total service life of the filter, or other set values, such as 75% or 70% of the total service life of the filter.

[0029] S3. When the service life of the filter is less than the first preset value, the photocatalytic module is turned on. When the service life of the filter is less than the first preset value, it means that the filter has been used for a period of time, and bacteria and formaldehyde are adsorbed on the filter. As the cumulative use time of the filter gradually increases, more and more bacteria and formaldehyde are adsorbed on the filter. If not treated, it will produce odor, and secondary pollution will occur after adsorption saturation. Therefore, the photocatalytic module is turned on. The photocatalytic module produces strong oxidizing free radicals and other active oxygen substances that first destroy the cell wall of microorganisms, causing oxidative damage to the cell membrane and intracellular metabolites and genetic material, and ultimately leading to the death of microbial cells on the filter. It can also photolyze the formaldehyde adsorbed on the filter, oxidizing the formaldehyde into carbon dioxide and water, thereby preventing the filter from producing odor, while extending the life of the filter and reducing the cost of frequent filter replacement.

[0030] In this embodiment, when the service life of the filter is greater than or equal to the first preset value, the photocatalytic module does not work, which can save electricity resources and further save costs.

[0031] It should be noted that when the user turns on the air purifier, the service life timing sensor automatically starts working.

[0032] On the basis of the above embodiment, in a preferred embodiment, as Figure 1 As shown, the above step S3 specifically includes:

[0033] S31. If the filter lifespan is within a first preset range, the photocatalytic module is operated in a first mode. The first preset range is less than a first preset value and greater than a second preset value. Specifically, the second preset value may be 50% of the total filter lifespan, or another preset value, such as 55% or 45% of the total filter lifespan.

[0034] S32. If the service life of the filter is within a second preset interval, the photocatalytic module operates in a second mode, the second preset interval is less than or equal to a second preset value, and the total working time of the second mode is greater than the total working time of the first mode.

[0035] In this embodiment, when the service life of the filter is relatively long, the working time of the photocatalytic module is relatively short. When the service life of the filter is relatively short, the working time of the photocatalytic module is relatively long. On the one hand, the service life of the photocatalytic module can be saved, and on the other hand, it can ensure that the photocatalytic module can fully sterilize and photolyze formaldehyde.

[0036] Based on the above embodiment, in a preferred embodiment, the first mode is to operate for a first duration, then stop for a second duration, and then continue for a third duration. In this embodiment, by operating the photocatalytic module for the first duration, then stopping for the second duration, and then continuing for the third duration, intermittent operation conserves electricity and extends the lifespan of the photocatalytic module. In other alternative embodiments, the first mode may also be continuous operation for the first preset duration.

[0037] Specifically in one embodiment, the first duration is 1 hour, the second duration is 1 hour, and the third duration is 1 hour. Of course, in other alternative embodiments, the first duration, the second duration, and the third duration can be other values.

[0038] Based on the above embodiment, in a preferred embodiment, the second mode is to operate for a fourth duration, then stop for a fifth duration, and then operate for a sixth duration. In this embodiment, by operating the photocatalytic module for the fourth duration, then stopping for the fifth duration, and then continuing for the sixth duration, intermittent operation conserves electricity and extends the lifespan of the photocatalytic module. In other alternative embodiments, the second mode may also be continuous operation for the second preset duration.

[0039] Specifically in one embodiment, the fourth duration is 2 hours, the fifth duration is 1 hour, and the sixth duration is 2 hours. Of course, in other alternative embodiments, the fourth duration, the fifth duration, and the sixth duration can be other values.

[0040] Based on the above embodiment, in a preferred embodiment, the control method further includes the following steps:

[0041] S3. Obtaining air humidity. Specifically, a humidity sensor may be provided at the air inlet of the air purifier to detect and obtain air humidity.

[0042] S4. Determine whether the air humidity is greater than a third preset value. Specifically, the third preset value may be 50%, or other preset values, such as 55% or 45%.

[0043] S5. When the air humidity is greater than the third preset value, the photocatalytic module is activated. When the air humidity is greater than the third preset value, it indicates that the air humidity is high, and bacteria are more likely to grow on the filter, causing odor. Activating the photocatalytic module can kill bacteria in the filter and prevent the generation of odor.

[0044] When the air humidity is lower than the third preset value, the air humidity is low and bacteria are not easily grown on the filter. Therefore, the photocatalytic module does not need to work, which can save electricity resources and further save costs.

[0045] Based on the above embodiment, in a preferred embodiment, the above step S5 specifically includes:

[0046] S51. If the air humidity is within a third preset range, the photocatalytic module operates in the first mode, wherein the third preset range is greater than a third preset value and less than a fourth preset value. Specifically, the fourth preset value may be 80%, or other set values, such as 75% or 85%.

[0047] S52. If the air humidity is in a fourth preset range, the photocatalytic module operates in the second mode, and the fourth preset range is greater than or equal to a fourth preset value.

[0048] In this embodiment, when the air humidity is relatively low, the working time of the photocatalytic module is relatively short, and when the air humidity is relatively high, the working time of the photocatalytic module is relatively long. On the one hand, it can save the service life of the photocatalytic module, and on the other hand, it can ensure that the photocatalytic module can be fully sterilized.

[0049] Example 2

[0050] This embodiment provides a control device for an air purifier, the air purifier including a filter and a photocatalytic module, the photocatalytic module being capable of acting on the filter. Specifically, the filter may be a carbon cloth that can absorb bacteria and formaldehyde in the air, and the photocatalytic module is TiO2.

[0051] In one embodiment, the control device includes a first acquisition module, a first judgment module and a first execution module.

[0052] The first acquisition module is used to obtain the filter service life. Specifically, the filter service life is the remaining service life of the filter, which can be calculated based on the cumulative operating hours of the air purifier. More specifically, a service life timing sensor can be provided to calculate the cumulative operating hours, and then the filter service life is calculated by subtracting the cumulative operating hours from the total life of the filter itself.

[0053] The first judgment module is used to judge whether the service life of the filter is less than a first preset value. Specifically, the first preset value can be 80% of the total service life of the filter, or other set values, such as 75% or 70% of the total service life of the filter.

[0054] The first execution module is used to activate the photocatalytic module when the service life of the filter is less than the first preset value. When the service life of the filter is less than the first preset value, it means that the filter has been used for a period of time and bacteria and formaldehyde are adsorbed on the filter. As the cumulative use time of the filter gradually increases, more and more bacteria and formaldehyde are adsorbed on the filter. If not treated, odor will be generated, and secondary pollution will occur after adsorption saturation. Therefore, the photocatalytic module is activated. The photocatalytic module produces strong oxidizing free radicals and other reactive oxygen species that first destroy the cell walls of microorganisms, causing oxidative damage to the cell membranes and intracellular metabolites and genetic material, ultimately leading to the death of the microbial cells on the filter. It can also photolyze formaldehyde, oxidizing the formaldehyde adsorbed by the filter into carbon dioxide and water, thereby preventing the filter from generating odor, while extending the life of the filter and reducing the cost of frequent filter replacement.

[0055] In this embodiment, when the service life of the filter is greater than or equal to the first preset value, the photocatalytic module does not work, which can save electricity resources and further save costs.

[0056] It should be noted that when the user turns on the air purifier, the service life timing sensor automatically starts working.

[0057] Based on the above implementation, in a preferred embodiment, the first execution module includes a first execution submodule and a second execution submodule.

[0058] The first execution submodule is configured to cause the photocatalytic module to operate in a first mode when the filter lifespan is within a first preset interval, where the first preset interval is less than the first preset value and greater than a second preset value. Specifically, the second preset value can be 50% of the total filter lifespan, or another set value, such as 55% or 45% of the total filter lifespan. The second execution submodule is configured to cause the photocatalytic module to operate in a second mode when the filter lifespan is within a second preset interval, where the second preset interval is less than or equal to the second preset value, and the total operating time of the second mode is greater than the total operating time of the first mode.

[0059] In this embodiment, when the service life of the filter is relatively long, the working time of the photocatalytic module is relatively short. When the service life of the filter is relatively short, the working time of the photocatalytic module is relatively long. On the one hand, the service life of the photocatalytic module can be saved, and on the other hand, it can ensure that the photocatalytic module can fully sterilize and photolyze formaldehyde.

[0060] Based on the above embodiment, in a preferred embodiment, the first mode is to operate for a first duration, then stop for a second duration, and then continue for a third duration. In this embodiment, by operating the photocatalytic module for the first duration, then stopping for the second duration, and then continuing for the third duration, intermittent operation conserves electricity and extends the lifespan of the photocatalytic module. In other alternative embodiments, the first mode may also be continuous operation for the first preset duration.

[0061] Specifically in one embodiment, the first duration is 1 hour, the second duration is 1 hour, and the third duration is 1 hour. Of course, in other alternative embodiments, the first duration, the second duration, and the third duration can be other values.

[0062] Based on the above embodiment, in a preferred embodiment, the second mode is to operate for a fourth duration, then stop for a fifth duration, and then operate for a sixth duration. In this embodiment, by operating the photocatalytic module for the fourth duration, then stopping for the fifth duration, and then continuing for the sixth duration, intermittent operation conserves electricity and extends the lifespan of the photocatalytic module. In other alternative embodiments, the second mode may also be continuous operation for the second preset duration.

[0063] Specifically in one embodiment, the fourth duration is 2 hours, the fifth duration is 1 hour, and the sixth duration is 2 hours. Of course, in other alternative embodiments, the fourth duration, the fifth duration, and the sixth duration can be other values.

[0064] On the basis of the above embodiment, in a preferred embodiment, the control device further includes a second acquisition module, a second judgment module and a second execution module.

[0065] The second acquisition module is used to acquire air humidity; specifically, a humidity sensor can be set at the air inlet of the air purifier to detect and acquire air humidity through the humidity sensor.

[0066] The second judgment module is used to judge whether the air humidity is greater than a third preset value; specifically, the third preset value may be 50%, or other set values, such as 55% or 45%.

[0067] The second execution module is configured to activate the photocatalytic module when the air humidity is greater than the third preset value. When the air humidity is greater than the third preset value, it indicates that the air humidity is high and the filter is more likely to breed bacteria and produce odor. Activating the photocatalytic module can kill bacteria in the filter and prevent the generation of odor.

[0068] When the air humidity is lower than the third preset value, the air humidity is low and bacteria are not easily grown on the filter. Therefore, the photocatalytic module does not need to work, which can save electricity resources and further save costs.

[0069] Based on the above implementation, in a preferred embodiment, the second execution module includes a third execution submodule and a fourth execution submodule.

[0070] The third execution submodule is used to enable the photocatalytic module to operate in the first mode when the air humidity is in a third preset interval, and the third preset interval is greater than the third preset value and less than the fourth preset value; specifically, the fourth preset value can be 80% or other set values, such as 75% or 85%.

[0071] The fourth execution submodule is configured to enable the photocatalytic module to operate in the second mode when the air humidity is within a fourth preset range, and the fourth preset range is greater than or equal to a fourth preset value.

[0072] In this embodiment, when the air humidity is relatively low, the working time of the photocatalytic module is relatively short, and when the air humidity is relatively high, the working time of the photocatalytic module is relatively long. On the one hand, it can save the service life of the photocatalytic module, and on the other hand, it can ensure that the photocatalytic module can be fully sterilized.

[0073] Example 3

[0074] This embodiment provides a computer-readable storage medium, which stores computer instructions. The computer instructions are used to enable a computer to execute the control method of embodiment 1.

[0075] The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD), etc.; the storage medium may also include a combination of the above types of memory.

[0076] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A control method for an air purifier, characterized in that: The air purifier includes a filter and a photocatalytic module, the photocatalytic module can act on the filter, and the control method includes: Get the filter service life; Determining whether the service life of the filter is less than a first preset value; When the service life of the filter is less than the first preset value, turning on the photocatalytic module includes: If the service life of the filter is within a first preset range, the photocatalytic module is operated in a first mode, wherein the first preset range is less than a first preset value and greater than a second preset value; If the service life of the filter is within a second preset interval, the photocatalytic module is operated in a second mode, the second preset interval is less than or equal to a second preset value, and the total working time of the second mode is greater than the total working time of the first mode; The first mode is to work for a first time period and then stop working for a second time period, and then work for a third time period after stopping working for the second time period.

2. The control method according to claim 1, characterized in that: The second mode is to work for a fourth time period and then stop working for a fifth time period, and then work for a sixth time period after stopping working for the fifth time period.

3. The control method according to any one of claims 1 to 2, characterized in that: The control method further includes: Get air humidity; determining whether the air humidity is greater than a third preset value; When the air humidity is greater than the third preset value, the photocatalytic module is turned on.

4. The control method according to claim 3, characterized in that: When the air humidity is greater than the third preset value, turning on the photocatalytic module includes: If the air humidity is within a third preset range, the photocatalytic module operates in the first mode, and the third preset range is greater than a third preset value and less than a fourth preset value; If the air humidity is within a fourth preset range, the photocatalytic module operates in the second mode, and the fourth preset range is greater than or equal to a fourth preset value.

5. A control device for an air purifier, characterized in that: The air purifier includes a filter and a photocatalytic module, wherein the photocatalytic module can act on the filter, and the control device includes: The first acquisition module is used to obtain the service life of the filter; A first judgment module is used to judge whether the service life of the filter is less than a first preset value; The first execution module is configured to activate the photocatalytic module when the service life of the filter is less than the first preset value. The first execution module includes: a first execution submodule, configured to enable the photocatalytic module to operate in a first mode when the service life of the filter is within a first preset interval, wherein the first preset interval is less than a first preset value and greater than a second preset value; The second execution submodule is used to enable the photocatalytic module to operate in a second mode when the service life of the filter is in a second preset interval, the second preset interval is less than or equal to a second preset value, and the total working time of the second mode is greater than the total working time of the first mode.

6. The control device according to claim 5, characterized in that The control device further comprises: The second acquisition module is used to obtain air humidity; A second judgment module is used to judge whether the air humidity is greater than a third preset value; The second execution module is configured to activate the photocatalytic module when the air humidity is greater than the third preset value.

7. The control device according to claim 6, characterized in that The second execution module includes: a third execution submodule, configured to enable the photocatalytic module to operate in the first mode when the air humidity is within a third preset range, wherein the third preset range is greater than a third preset value and less than a fourth preset value; The fourth execution submodule is configured to enable the photocatalytic module to operate in the second mode when the air humidity is within a fourth preset range, where the fourth preset range is greater than or equal to a fourth preset value.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the control method according to any one of claims 1 to 4.

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