Purification device and filter screen purification control method, apparatus, medium and program product thereof

Abstract

The application relates to a filter screen purification control method and device of the above-mentioned purification equipment, purification equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: obtaining an air inlet parameter of an air inlet of the purification equipment and an air outlet parameter of an air outlet; determining a pollutant removal rate attenuation amount of a filter screen of the purification equipment according to the air inlet parameter and the air outlet parameter; and controlling a purification device of the purification equipment based on the pollutant removal rate attenuation amount. By using the method, the current filtering capacity of the filter screen can be evaluated through the attenuation of the pollutant removal rate, and the operating state of the purification device is dynamically adjusted accordingly, so that the filtering capacity of the filter screen is restored through the purification device. Therefore, the air purification effect is improved, the service life of the filter screen is prolonged, the replacement frequency is reduced, and the convenience and economy of the use of the air purification equipment are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas purification, in particular to a filter screen purification control method and device of a purification equipment, the purification equipment, a computer readable storage medium and a computer program product. BACKGROUND

[0002] With the continuous development of science and technology and the improvement of people's living standards, people's requirements for indoor air quality are increasing, and air purification products have been widely popularized and applied.

[0003] At present, people usually use air purification equipment to remove indoor pollutants such as formaldehyde. In the air purification equipment, the filter screen as the core component, its performance is directly related to the purification effect. At present, the air purification equipment mostly uses filter screen technology combining high-efficiency adsorbent and catalyst to achieve better gas purification capacity. However, this method can significantly improve the purification efficiency, but due to the adsorption saturation of the adsorbent material, the filter screen will reach the service life in advance, and frequent replacement of the filter screen will increase the use cost of the air purification equipment. SUMMARY

[0004] Therefore, it is necessary to provide a filter screen purification control method and device of a purification equipment, a purification equipment, a computer readable storage medium and a computer program product capable of improving the service life of the filter screen to solve the above technical problems.

[0005] In a first aspect, the present application provides a filter screen purification control method of a purification equipment, comprising:

[0006] obtaining an inlet gas parameter of an inlet of the purification equipment and an outlet gas parameter of an outlet;

[0007] determining a pollutant removal rate attenuation amount of a filter screen of the purification equipment according to the inlet gas parameter and the outlet gas parameter;

[0008] controlling a purification device of the purification equipment based on the pollutant removal rate attenuation amount.

[0009] In one embodiment, the controlling a purification device of the purification equipment based on the pollutant removal rate attenuation amount comprises:

[0010] in the case that the pollutant removal rate attenuation amount is greater than a preset pollution threshold, controlling a filter screen purification module in the purification device to be turned on.

[0011] In one embodiment, in the case that the pollutant removal rate attenuation amount is greater than a preset pollution threshold, before the controlling a filter screen purification module in the purification device to be turned on, the method further comprises:

[0012] controlling the inlet and the outlet to be closed.

[0013] In one of the embodiments, after the filter screen purification module in the purification device is controlled to be turned on in the case that the pollutant removal rate attenuation amount is greater than the preset pollution threshold, the method further comprises:

[0014] In the case that the pollutant removal rate attenuation amount is in a first preset range, the ultraviolet light catalysis module in the purification device is controlled to be turned on, wherein the minimum value of the first preset range is greater than or equal to the preset pollution threshold.

[0015] In one of the embodiments, after the filter screen purification module in the purification device is controlled to be turned on in the case that the pollutant removal rate attenuation amount is greater than the preset pollution threshold, the method further comprises:

[0016] In the case that the pollutant removal rate attenuation amount is in a second preset range, the plasma purification module in the purification device is controlled to be turned on, wherein the minimum value of the second preset range is greater than the maximum value of the first preset range.

[0017] In one of the embodiments, after the filter screen purification module in the purification device is controlled to be turned on in the case that the pollutant removal rate attenuation amount is greater than the preset pollution threshold, the method further comprises:

[0018] In the case that the pollutant removal rate attenuation amount is in a third preset range, the heating module in the purification device is controlled to be turned on, wherein the minimum value of the third preset range is greater than the maximum value of the second preset range.

[0019] In one of the embodiments, in the case that the pollutant removal rate attenuation amount is in the third preset range, the method further comprises:

[0020] The ultraviolet light catalysis module and the plasma purification module in the purification device are controlled to be turned on.

[0021] In one of the embodiments, the method of determining the pollutant removal rate attenuation amount of the filter screen of the purification device according to the intake air parameter and the exhaust air parameter comprises:

[0022] determining an initial pollutant removal rate according to the intake air parameter and the exhaust air parameter at a historical time;

[0023] determining a current pollutant removal rate according to the intake air parameter and the exhaust air parameter at a current time;

[0024] determining the current pollutant removal rate attenuation amount of the filter screen based on the current pollutant removal rate and the initial pollutant removal rate.

[0025] In one of the embodiments, after the step of controlling the purification device of the purification equipment based on the pollutant removal rate decay amount, the method further comprises:

[0026] Returning to the step of obtaining the inlet parameter of the inlet of the purification equipment and the outlet parameter of the outlet.

[0027] In a second aspect, the application further provides a filter screen purification control device of a purification equipment, comprising:

[0028] a parameter obtaining module, configured to obtain the inlet parameter of the inlet of the purification equipment and the outlet parameter of the outlet;

[0029] a decay amount determining module, configured to determine the pollutant removal rate decay amount of the filter screen of the purification equipment according to the inlet parameter and the outlet parameter;

[0030] a purification control module, configured to control the purification device of the purification equipment based on the pollutant removal rate decay amount.

[0031] In a third aspect, the application further provides a purification equipment, comprising a controller and a purification device connected with each other; wherein a wind channel is formed between the inlet and the outlet of the purification equipment, the filter screen and the purification device are arranged on the wind channel, and the controller is configured to implement the steps of the method as described above.

[0032] In a fourth aspect, the application further provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the following steps:

[0033] obtaining the inlet parameter of the inlet of the purification equipment and the outlet parameter of the outlet;

[0034] determining the pollutant removal rate decay amount of the filter screen of the purification equipment according to the inlet parameter and the outlet parameter;

[0035] controlling the purification device of the purification equipment based on the pollutant removal rate decay amount.

[0036] In a fifth aspect, the application further provides a computer program product, comprising a computer program, and the computer program is executed by a processor to implement the following steps:

[0037] obtaining the inlet parameter of the inlet of the purification equipment and the outlet parameter of the outlet;

[0038] determining the pollutant removal rate decay amount of the filter screen of the purification equipment according to the inlet parameter and the outlet parameter;

[0039] controlling the purification device of the purification equipment based on the pollutant removal rate decay amount.

[0040] The filter screen purification control method, device, purification equipment, computer readable storage medium and computer program product of the purification equipment obtain an inlet parameter of an inlet of the purification equipment and an outlet parameter of an outlet; determine a pollutant removal rate attenuation of a filter screen of the purification equipment according to the inlet parameter and the outlet parameter; and control a purification device of the purification equipment based on the pollutant removal rate attenuation. In this way, the current filtering capacity of the filter screen can be evaluated through the attenuation of the pollutant removal rate, and the operating state of the purification device is dynamically adjusted accordingly, so that the filtering capacity of the filter screen is restored through the purification device. Thus, the air purification effect is improved, the service life of the filter screen is prolonged, the replacement frequency is reduced, and the convenience and economy of the use of the air purification equipment are improved. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the description of the embodiments of the present application or the related art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other related drawings can be obtained by those skilled in the art without creative labor.

[0042] Figure 1 It is a structural schematic diagram of the purification equipment in an embodiment;

[0043] Figure 2 It is a flowchart of the filter screen purification control method of the purification equipment in an embodiment;

[0044] Figure 3 It is a flowchart of determining the pollutant removal rate attenuation of the filter screen of the purification equipment according to the inlet parameter and the outlet parameter in an embodiment;

[0045] Figure 4 It is a flowchart of the filter screen purification control method of the purification equipment in another embodiment;

[0046] Figure 5 It is a flowchart of the filter screen purification control method of the purification equipment in another embodiment;

[0047] Figure 6 It is a flowchart of the filter screen purification control method of the purification equipment in another embodiment;

[0048] Figure 7 It is a flowchart of the filter screen purification control method of the purification equipment in another embodiment;

[0049] Figure 8 It is a structural block diagram of the filter screen purification control device of the purification equipment in an embodiment. DETAILED DESCRIPTION

[0050] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0051] The filter screen purification control method of the purification device provided by the embodiments of the present application can be applied to the purification device as shown in Figure 1 . The purification device can be, but is not limited to, an air purifier, an air conditioner with a filter screen, etc.

[0052] The purification device comprises a controller (not shown) and a purification device connected thereto. An air duct is formed between the air inlet and the air outlet of the purification device, and the filter screen (not shown) and the purification device are arranged on the air duct. The specific arrangement positions of the filter screen and the purification device can be arranged according to actual conditions, and the embodiments do not limit the comparison.

[0053] It can be understood that, in actual implementation, the purification device further comprises a circulating fan connected to the controller. When the purification device operates in the air purification mode, the circulating fan starts to work, and indoor air is sucked in through the air inlet. After the air is purified by the filter screen and the purification device, the air returns to the indoor environment through the air outlet under the action of the circulating fan, thereby forming air circulation.

[0054] The purification device further comprises a detection module connected to the controller, and the detection module is used to detect the gas quality of the air inlet and the air outlet, and obtain and output the air inlet parameter of the air inlet and the air outlet parameter of the air outlet.

[0055] The controller is used to obtain the air inlet parameter of the air inlet and the air outlet parameter of the air outlet of the purification device; determine the pollutant removal rate attenuation amount of the filter screen of the purification device according to the air inlet parameter and the air outlet parameter; and control the purification device of the purification device based on the pollutant removal rate attenuation amount. Thus, the filter screen is restored to the filtering capacity by the purification device, thereby prolonging the service life of the filter screen.

[0056] In one embodiment, the purification device comprises a filter screen purification module, an ultraviolet light catalysis module, a plasma purification module and a heating module connected to the controller respectively. The structure of the filter screen purification module can be arranged according to actual needs in actual implementation. For example, the filter screen purification module can be a circulating fan.

[0057] In one exemplary embodiment, as shown in Figure 2 , a filter screen purification control method of a purification device is provided. The method is applied to the controller of the purification device in Figure 1 . The method comprises the following steps 202 to 206. Wherein:

[0058] Step 202: Obtain the air inlet parameters and the air outlet parameters of the purification equipment.

[0059] The intake parameters characterize the parameters of the air entering the duct through the intake port, while the exhaust parameters characterize the parameters of the gas flowing out through the exhaust port. For example, the intake and exhaust parameters may include particulate matter concentration, harmful gas concentration (such as formaldehyde), etc.

[0060] In actual implementation, the controller can acquire the intake and exhaust parameters in real time, or it can acquire the initial intake and exhaust parameters once when the machine is turned on, and then acquire them again at regular intervals; it can also acquire the intake and exhaust parameters when there is a need for use (such as when it is necessary to calculate the pollutant removal rate attenuation).

[0061] Step 204: Determine the pollutant removal rate reduction of the filter screen of the purification equipment based on the inlet and outlet air parameters.

[0062] Pollutant removal rate decay is an important indicator for evaluating the durability of pollutant removal effectiveness. It reflects the degree of decrease in pollutant removal rate over a specific period of time.

[0063] In one embodiment, such as Figure 3 As shown, step 204 may include steps 302-306.

[0064] Step 302: Determine the initial pollutant removal rate based on the inlet and outlet parameters at historical times.

[0065] The historical time needs to be set according to the actual situation. For example, the historical time can be the power-on time of the air purifier. The air intake and exhaust parameters at power-on time refer to the air intake and exhaust parameters of each module when the user turns on the air purifier and it is operating normally. In some embodiments, the historical time can also be a preset time prior to the current time, for example, the historical time is 20 minutes before the current time. In some embodiments, the historical time can also be the time when the air intake and exhaust ports were last opened.

[0066] When determining the initial pollutant removal rate based on inlet and outlet parameters, it can be determined according to the relationship between the outlet and inlet parameters. For ease of understanding, the following explanation uses the example of inlet parameters including the formaldehyde concentration at the inlet (i.e., inlet formaldehyde concentration) and outlet parameters including the formaldehyde concentration at the outlet (i.e., outlet formaldehyde concentration).

[0067] When determining the initial pollutant removal rate, you can first calculate the difference between the formaldehyde concentration in the exhaust air and the formaldehyde concentration in the inlet air at historical times, and then calculate the ratio between the difference and the formaldehyde concentration in the inlet air. Use this ratio as the initial pollutant removal rate.

[0068] Step 304, determining the current pollutant removal rate according to the current intake parameter and the current exhaust parameter.

[0069] The current intake parameter and the current exhaust parameter can be the intake parameter and the exhaust parameter at the time when the filter purification instruction is received. The filter purification instruction can be issued by a user according to the use requirement, or generated by the controller. In some embodiments, the operation mode of the purification device at least includes an air purification mode, and the controller can count the total time length during which the purification device operates in the air purification mode, and generate the filter purification instruction internally when the total time length reaches a certain time length. The controller can also count the time from the last time when the filter purification instruction is generated, and generate the filter purification instruction according to the time length. In other embodiments, the purification device further includes a detection assembly for detecting the dirtiness of the filter, and the detection assembly is connected to the controller. The controller judges the dirtiness of the filter according to the detection data transmitted by the detection assembly, and generates the filter purification instruction according to the dirtiness. The detection assembly can be a weight detection assembly or an image acquisition assembly, etc.

[0070] At the current initial pollutant removal rate, the difference between the exhaust formaldehyde concentration and the intake formaldehyde concentration at the current time can be calculated first, and then the ratio between the difference and the intake formaldehyde concentration at the current time can be calculated, which is taken as the current pollutant removal rate.

[0071] Step 306, determining the pollutant removal rate attenuation of the filter based on the current pollutant removal rate and the initial pollutant removal rate.

[0072] In specific calculation, the pollutant removal rate attenuation of the filter can be equal to the difference between the current pollutant removal rate and the initial pollutant removal rate. It can be understood that the pollutant removal rate attenuation is calculated based on the current time, which reflects the degree of decline of the formaldehyde removal rate over time within a specific time period from the current time to the historical time, and based on the removal rate attenuation, the formaldehyde removal capacity of the filter can be evaluated.

[0073] Step 206, controlling the purification device of the purification device based on the pollutant removal rate attenuation.

[0074] After the attenuation of the pollutant removal rate is determined, the controller can adjust the working state of the purification device according to this information. For example, when the pollutant removal rate attenuation is small, it can be considered that the formaldehyde removal capacity of the filter is good, and at this time, the modules in the purification device can be controlled to stop running to save energy. When the pollutant removal rate attenuation is large, it can be considered that the formaldehyde removal capacity of the filter is reduced, and at this time, the corresponding modules in the purification device can be controlled to run to purify the filter through the purification device.

[0075] The control method of the purification device obtains an inlet parameter of an air inlet of the purification device and an outlet parameter of an air outlet; determines a pollutant removal rate attenuation of a filter screen of the purification device according to the inlet parameter and the outlet parameter; and controls a purification device of the purification device based on the pollutant removal rate attenuation. Thus, the current filtering capacity of the filter screen can be evaluated through the attenuation of the pollutant removal rate, and the operating state of the purification device is dynamically adjusted accordingly to restore the filtering capacity of the filter screen through the purification device. Thus, the air purification effect is improved, the service life of the filter screen is prolonged, the replacement frequency is reduced, and the convenience and economy of the use of the air purification device are improved.

[0076] In an exemplary embodiment, after step 206, the controller can also return to perform step 202 to re-determine the pollutant removal rate attenuation. If the pollutant removal rate attenuation has recovered to meet the use requirements at this time, the purification device is controlled to stop operating. If the pollutant removal rate attenuation is large at this time, the purification device is controlled to continue operating. Thus, through this feedback mechanism, the controller can dynamically adjust the operating state of the purification device according to the actual situation, thereby maximizing the use of energy and resources while ensuring the purification effect of the filter screen.

[0077] In an exemplary embodiment, as shown in FIG. 4, step 206 includes step 402: in the case that the pollutant removal rate attenuation is greater than a preset pollution threshold, controlling a filter screen purification module in the purification device to start. Figure 4

[0078] The preset pollution threshold can represent the filtering capacity of the filter screen. When the pollutant removal rate attenuation is greater than the preset pollution threshold, it indicates that the filtering capacity of the filter screen has decreased significantly and needs to be cleaned. At this time, by controlling the filter screen purification module in the purification device to start, the circulating fan in the filter screen purification module can generate a powerful airflow to blow off the pollutants on the filter screen. This blowing action can destroy the adsorption balance of the pollutants such as formaldehyde and intermediate products on the surface of the filter screen, so that they are desorbed from the filter screen. The purification device can also be provided with a collection module to collect and process the pollutants desorbed from the filter screen. Thus, the filtering efficiency of the filter screen can be restored and the service life thereof can be prolonged.

[0079] It can be understood that in the case that the pollutant removal rate attenuation is less than or equal to the preset pollution threshold, the controller will also control each module in the purification device to stop operating.

[0080] When the pollutant removal rate attenuation is less than or equal to the preset pollution threshold, it indicates that the filtering capacity of the filter screen is in a good range. At this time, each module in the purification device is controlled to stop operating or is not controlled to start, which can effectively save energy consumption.

[0081] ​In actual implementation, after step 402, the method can further include a step of: controlling the filter screen purification module to be closed when the opening duration of the filter screen purification module reaches a preset purging duration. The preset purging duration can be set by a user or be a fixed duration value pre-stored in the controller, such as 20 minutes. The preset purging duration can also be dynamically determined by the controller based on factors such as the material, adsorption capacity, pollution degree of the filter screen, and performance of the circulating fan, to ensure that the pollutants adsorbed on the filter screen can be effectively desorbed during the purging process.

[0082] Further, after the opening duration of the filter screen purification module reaches the preset purging duration, the controller also controls the filter screen purification module to be closed. In this way, the filter screen purification module can be effectively purged, and unnecessary energy waste caused by excessive purging can be avoided.

[0083] In some embodiments, after the controller controls the filter screen purification module to be closed, the controller can again control the air inlet and the air outlet to be opened, and return to execute step 202 to re-determine the pollutant removal rate decay amount. If the pollutant removal rate decay amount is lower than the preset pollution threshold at this time, it is determined that the filtering capacity of the filter screen has recovered to meet the use requirements. If the pollutant removal rate decay amount is still greater than the preset pollution threshold at this time, the circulating fan is controlled to be opened again. This way, the purification is repeated until the pollutant removal rate decay amount is lower than the preset pollution threshold.

[0084] In one embodiment, before the filter screen purification module in the purification device is controlled to be opened in step 402, the filter screen purification control method of the purification device further includes: controlling the air inlet and the air outlet to be closed when the pollutant removal rate decay amount is greater than the preset pollution threshold.

[0085] In actual implementation, the purification device further includes an air inlet switch assembly and an air outlet switch assembly connected to the controller. The controller can control the opening and closing states of the air inlet and the air outlet through the air inlet switch assembly and the air outlet switch assembly.

[0086] In this embodiment, the air inlet and the air outlet are closed to form a closed environment, which ensures that the airflow generated by the circulating fan is concentrated in the filter screen area inside the purification device, reduces the interference of external airflow on the purging process, and improves the purging efficiency. Moreover, the closed environment helps to enhance the sweeping and stripping effects of the airflow on the pollutants on the filter screen, thereby enhancing the desorption effect. At the same time, it is also more convenient to collect the pollutants desorbed by purging, and prevent these pollutants from entering the room and polluting the indoor environment.

[0087] In one embodiment, as Figure 5As shown, after step 402, the filter screen purification control method of the purification device further includes: step 502: in the case that the pollutant removal rate attenuation amount is in a first preset range, controlling the ultraviolet photocatalytic module in the purification device to be turned on.

[0088] The minimum value of the first preset range is greater than or equal to a preset pollution threshold. The first preset range and the preset pollution threshold can be set according to actual conditions. Exemplarily, the first preset range can be 25%-50%, and the preset pollution threshold can be 25%.

[0089] In this embodiment, in the case that the pollutant removal rate attenuation amount is in the first preset range, the ultraviolet photocatalytic module is turned on. The filter screen uses the technology of combining high-efficiency adsorbent and catalyst to purify gases such as formaldehyde, and the photocatalyst is irradiated by ultraviolet light of the ultraviolet photocatalytic module, which can produce active substances to rapidly decompose formaldehyde. During the degradation of formaldehyde, some intermediate products may be produced, which can also be processed by the ultraviolet photocatalytic module. Since the active substances produced by the photocatalytic reaction have strong oxidizing properties, they can continue to react with these intermediate products, further oxidizing and decomposing them into smaller harmless molecules. Therefore, by turning on the ultraviolet photocatalytic module, the removal efficiency of pollutants such as formaldehyde and intermediate products on the filter screen can be accelerated, and the filtering capacity of the filter screen can be restored.

[0090] Further, the controller will control the ultraviolet photocatalytic module to be turned off after the ultraviolet photocatalytic module is turned on for a preset catalytic duration. Thus, the ultraviolet photocatalytic module can be effectively catalyzed, unnecessary energy waste caused by overwork of the ultraviolet photocatalytic module can be avoided, and the service life of the ultraviolet lamp can be prolonged.

[0091] In some embodiments, after the controller controls the ultraviolet photocatalytic module to be turned off, the controller can again control the air inlet and the air outlet to be turned on and return to execute step 202 to re-determine the pollutant removal rate attenuation amount. If the pollutant removal rate attenuation amount is lower than the preset pollution threshold at this time, it is determined that the filtering capacity of the filter screen has been restored to meet the use requirements. If the pollutant removal rate attenuation amount is still greater than the preset pollution threshold at this time, the air inlet and the air outlet are again controlled to be turned off, and the circulating fan is controlled to be turned on. If the pollutant removal rate attenuation amount is still in the first preset range, the ultraviolet photocatalytic module needs to be turned on again to continue to purify the filter screen. This repetition is continued until the pollutant removal rate attenuation amount is lower than the preset pollution threshold.

[0092] In one embodiment, as shown in Figure 6 After step 402, the filter screen purification control method of the purification device further includes: step 602: in the case that the pollutant removal rate attenuation amount is in a second preset range, controlling the plasma purification module in the purification device to be turned on.

[0093] The minimum value of the second preset range is greater than the maximum value of the first preset range. The second preset range can be set according to actual conditions. For example, the second preset range can be 50%-75%.

[0094] In this embodiment, when the pollutant removal rate attenuation amount is in the second preset range, the purification capacity of the filter screen cannot meet the use requirements, such as national standard requirements, at this time the plasma purification module is started, and the plasma technology is used to remove the pollutants in the air.

[0095] Specifically, the plasma is a highly ionized gas, which contains a large number of active particles such as electrons, ions and free radicals. These particles can react with pollutants in the air and decompose them into harmless substances. Compared with the ultraviolet light catalytic module, the plasma purification module can have stronger oxidation capacity and wider spectrum of pollutant removal capacity, and is suitable for treating higher concentration of pollutants or more difficult to degrade pollutants. Therefore, by starting the plasma purification module, the removal efficiency of pollutants such as formaldehyde and intermediate products on the filter screen can be accelerated, and the filter screen can restore the filtering capacity.

[0096] It can be understood that the controller will control the plasma purification module to be closed after the plasma purification module is started for a preset decomposition time. Thus, the plasma purification module can be ensured to work effectively, and unnecessary energy waste caused by overwork can be avoided.

[0097] In some embodiments, after the controller controls the plasma purification module to be closed, the air inlet and the air outlet can be controlled to be opened again, and step 202 can be executed again to determine the pollutant removal rate attenuation amount. If the pollutant removal rate attenuation amount is lower than the preset pollution threshold value at this time, it is determined that the filtering capacity of the filter screen has been restored. If the pollutant removal rate attenuation amount is still greater than the preset pollution threshold value at this time, the air inlet and the air outlet are controlled to be closed again, and the circulating fan is controlled to be started. If the pollutant removal rate attenuation amount is still in the first preset range, the ultraviolet light catalytic module needs to be started again to continue purifying the filter screen. If the pollutant removal rate attenuation amount is still in the second preset range, the plasma purification module needs to be started again to continue purifying the filter screen. This is repeated until the pollutant removal rate attenuation amount is lower than the preset pollution threshold value.

[0098] In one embodiment, after step 402, the filter screen purification control method of the purification device further includes the step of: when the pollutant removal rate attenuation amount is in a third preset range, controlling a heating module in the purification device to be started.

[0099] The minimum value of the third preset range is greater than the maximum value of the second preset range. The third preset range can be set according to actual conditions. For example, the third preset range can be 75%-100%.

[0100] In the embodiment, when the pollutant removal rate attenuation amount is in the third preset range, it is explained that the pollutant on the filter screen is too high at this time, the filter screen has weak ability to purify formaldehyde, and the simple blowing desorption of formaldehyde on the filter screen cannot meet the requirements, and therefore the heating module needs to be started.

[0101] The heating module directly increases the temperature of the internal environment of the air purifier by generating heat. This temperature rise can enhance the volatilization efficiency of formaldehyde on the surface of the filter screen and the surrounding air. For the formaldehyde adsorbed in the filter screen, heating can make it escape from the material inside to the air more quickly, thereby accelerating the release of formaldehyde on the filter screen and restoring the purification ability of the filter screen.

[0102] It can be understood that the controller will control the heating module to be turned off after the heating module is turned on for a preset heating time. Thus, the heating module can be ensured to work effectively, and unnecessary energy waste caused by overwork of the heating module can be avoided.

[0103] Further, in some embodiments, when the pollutant removal rate attenuation amount is in the third preset range, the controller can control the ultraviolet photocatalytic module and the plasma purification module in the purification device to be turned on at the same time as the heating module in the purification device is turned on.

[0104] By turning on the heating module, the release of formaldehyde on the filter screen can be accelerated, and by turning on the ultraviolet and plasma purification modules at the same time, a large number of active oxygen species are generated through direct and indirect action of high-energy electrons generated in the plasma stage, which oxidize formaldehyde into small molecular intermediates or harmless substances; in the photocatalysis stage, the photocatalyst is not only excited by ultraviolet light, but also activated by active species migrated from the plasma zone, and further generates strong oxidizing free radicals to oxidize formaldehyde and by-products generated by plasma reaction, thereby improving the ability to remove formaldehyde. Through the synergistic effect of the three, the removal of formaldehyde can be accelerated, the filtering ability of the filter screen can be restored, and the service life of the filter screen can be prolonged.

[0105] Furthermore, after shutting down the heating module, ultraviolet photocatalysis module, and plasma purification module, the controller can reopen the air inlet and outlet and return to step 202 to re-determine the pollutant removal rate attenuation. If the pollutant removal rate attenuation is lower than the preset pollution threshold, the filter's filtration capacity is considered restored. If the pollutant removal rate attenuation is still greater than the preset pollution threshold, the air inlet and outlet are closed again, and the circulating fan is turned on. If the pollutant removal rate attenuation is still within the first preset range, the ultraviolet photocatalysis module needs to be turned on again to continue purifying the filter. If the pollutant removal rate attenuation is still within the second preset range, the plasma purification module needs to be turned on again to continue purifying the filter. If the pollutant removal rate attenuation is within the third preset range, the heating module, ultraviolet photocatalysis module, and plasma purification module in the purification device are turned on. This process is repeated until the pollutant removal rate attenuation is lower than the preset pollution threshold.

[0106] To better understand the above embodiments, a detailed explanation is provided below with reference to a specific embodiment. In one embodiment, the control method for the purification device can be applied to devices such as air purifiers and air conditioners with formaldehyde removal filters.

[0107] like Figure 7 As shown, after the air purifier is turned on, the controller controls the start of the air inlet and outlet through the air inlet switch assembly and the air outlet switch assembly. It also obtains the air inlet parameters (such as the air inlet formaldehyde concentration) and the air outlet parameters (such as the air outlet formaldehyde concentration) through the detection module. Its function is to monitor the formaldehyde removal rate attenuation in real time in order to determine the subsequent process.

[0108] Specifically, when the removal rate decreases by ≤25%, the formaldehyde removal capacity of the filter is still within a good range, so the filter purification module should not be turned on.

[0109] When the removal rate decreases by ≤25%, the circulating fan of the filter purification module will be shut down.

[0110] When the removal rate decreases by more than 25%, the air inlet and outlet are closed, and the circulating fan of the filter purification module is turned on. The function is to desorb the formaldehyde and intermediate products adsorbed on the filter through purging and desorption.

[0111] When 25% < removal rate attenuation ≤ 50%, the formaldehyde removal capacity of the filter has decreased significantly, but it can still be used. Therefore, the ultraviolet purification module is turned on, which removes pollutants through ultraviolet photocatalysis, thereby achieving the purification effect of the filter. If the removal rate attenuation is not within this range, the attenuation needs to be re-evaluated.

[0112] When 50% < removal rate attenuation amount ≤ 75%, the filter screen has been unable to achieve the national standard requirements for formaldehyde removal, and therefore the plasma purification module needs to be turned on for rapid purification. Turning on the plasma purification module has the effect of removing pollutants on the filter screen through plasma, and the plasma removal capacity is stronger than that of ultraviolet light catalysis, which can accelerate the purification of the filter screen; if the removal rate attenuation amount is not within this range, the attenuation amount needs to be re-determined.

[0113] When 75% < removal rate attenuation amount ≤ 100%, it indicates that the pollutants on the filter screen are too high, and the filter screen has basically no capacity for formaldehyde purification, and simple purge desorption of formaldehyde on the filter screen cannot meet the requirements, and therefore the heating module needs to be turned on to accelerate the release of formaldehyde on the filter screen. At the same time, the ultraviolet and plasma purification modules are turned on, the high-energy electrons generated in the plasma stage produce a large amount of active oxygen species through direct and indirect action, oxidize formaldehyde into small molecular intermediates or convert it into harmless substances; in the photocatalysis stage, the photocatalyst is not only excited by ultraviolet light, but also activated by active species migrated from the plasma zone, and further generates strong oxidizing free radicals to oxidize formaldehyde and by-products generated by plasma reaction, thereby improving the capacity for removing formaldehyde. If the removal rate attenuation amount is not within this range, the attenuation amount needs to be re-determined.

[0114] The filter screen purification control method of the above-mentioned purification device can select appropriate modules in the purification device according to different formaldehyde removal rate attenuation amounts, effectively remove formaldehyde, prolong the service life of the filter screen, and achieve the purpose of saving energy consumption.

[0115] It should be understood that, although each step in the flowchart involved in each of the above-described embodiments is shown in sequence according to the direction of the arrow, these steps are not necessarily executed in sequence according to the direction of the arrow. Unless explicitly stated herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each of the above-described embodiments can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0116] Based on the same inventive concept, the embodiments of the present application also provide a filter screen purification control device of a purification device for implementing the above-mentioned filter screen purification control method of the purification device. The problem-solving implementation scheme provided by the device is similar to the implementation scheme described in the above method, and therefore the specific limitations in one or more filter screen purification control device embodiments provided below can refer to the limitations of the filter screen purification control method of the purification device described above, and will not be repeated here.

[0117] In one example embodiment, as shown in Figure 8 a filter screen purification control device of a purification device is provided, comprising: a parameter acquisition module 702, an attenuation amount determination module 704, and a purification control module 706, wherein:

[0118] The parameter acquisition module 702 is configured to acquire an inlet parameter of an inlet of the purification device and an outlet parameter of an outlet of the purification device.

[0119] The attenuation amount determination module 704 is configured to determine a pollutant removal rate attenuation amount of a filter screen of the purification device according to the inlet parameter and the outlet parameter.

[0120] The purification control module 706 is configured to control a purification device of the purification device based on the pollutant removal rate attenuation amount.

[0121] In one embodiment, the purification control module 706 is further configured to control a filter screen purification module in the purification device to be turned on when the pollutant removal rate attenuation amount is greater than a preset pollution threshold.

[0122] In one embodiment, the purification control module 706 is further configured to control the inlet and the outlet to be both closed.

[0123] In one embodiment, the purification control module 706 is further configured to control an ultraviolet light catalysis module in the purification device to be turned on when the pollutant removal rate attenuation amount is in a first preset range, wherein a minimum value of the first preset range is greater than or equal to the preset pollution threshold.

[0124] In one embodiment, the purification control module 706 is further configured to control a plasma purification module in the purification device to be turned on when the pollutant removal rate attenuation amount is in a second preset range, wherein a minimum value of the second preset range is greater than a maximum value of the first preset range.

[0125] In one embodiment, the purification control module 706 is further configured to control a heating module in the purification device to be turned on when the pollutant removal rate attenuation amount is in a third preset range, wherein a minimum value of the third preset range is greater than a maximum value of the second preset range.

[0126] In one embodiment, the purification control module 706 is further configured to control the ultraviolet light catalysis module and the plasma purification module in the purification device to be turned on.

[0127] In one embodiment, the attenuation amount determining module 704 is further configured to determine an initial pollutant removal rate according to the inlet parameter and the outlet parameter at the historical time; determine a current pollutant removal rate according to the inlet parameter and the outlet parameter at the current time; and determine the current pollutant removal rate attenuation of the filter screen based on the current pollutant removal rate and the initial pollutant removal rate.

[0128] The modules in the filter screen purification control device of the purification device can be implemented by software, hardware, or a combination thereof. The modules can be embedded in or independent of a processor in a computer device in hardware form, or stored in a memory in the computer device in software form, so as to be called and executed by the processor.

[0129] In one exemplary embodiment, a purification device is provided, which includes a controller and a purification device connected thereto. An air duct is formed between an air inlet and an air outlet of the purification device, and a filter screen and the purification device are arranged in the air duct. The controller is configured to implement the steps of the filter screen purification control method of the purification device.

[0130] The purification device can be, but is not limited to, an air purifier, an air conditioner with a filter screen, etc. In one embodiment, the purification device can include a controller (not shown) and a purification device connected thereto. Figure 1 An air duct is formed between an air inlet and an air outlet of the purification device, and a filter screen (not shown) and the purification device are arranged in the air duct. The specific arrangement positions of the filter screen and the purification device can be set according to actual conditions, and the embodiment does not limit the comparison.

[0131] It can be understood that, in actual implementation, the purification device further includes a circulating fan connected to the controller. When the purification device operates in an air purification mode, the circulating fan starts to work, and indoor air is sucked in through the air inlet. After the air is purified by the filter screen and the purification device, the air returns to the indoor environment through the air outlet under the action of the circulating fan, thereby forming air circulation.

[0132] The purification device further includes a detection module connected to the controller. The detection module is configured to detect the gas quality of the air inlet and the air outlet, and obtain and output the inlet parameter of the air inlet and the outlet parameter of the air outlet.

[0133] In one embodiment, the purification device includes a filter screen purification module, an ultraviolet light catalysis module, a plasma purification module, and a heating module connected to the controller, respectively. The structure of the filter screen purification module can be set according to actual needs in actual implementation. For example, the filter screen purification module can be a circulating fan.

[0134] When the purification device operates in the filter screen purification mode, the controller purifies the filter screen according to the above-mentioned embodiments of the filter screen purification control method of the purification device, so that the filter screen maintains a high purification capability, and ensures that the purification device can effectively purify ambient air when operating in the air purification mode, thereby improving the reliability of the air purification device.

[0135] In one embodiment, a computer readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, implements the following steps:

[0136] Obtaining an inlet air parameter of an inlet of the purification device and an outlet air parameter of an outlet of the purification device;

[0137] Determining a pollutant removal rate decay amount of a filter screen of the purification device according to the inlet air parameter and the outlet air parameter;

[0138] Controlling a purification device of the purification device based on the pollutant removal rate decay amount.

[0139] In one embodiment, the computer program, when executed by the processor, further implements the following step: controlling a filter screen purification module in the purification device to be turned on when the pollutant removal rate decay amount is greater than a preset pollution threshold.

[0140] In one embodiment, the computer program, when executed by the processor, further implements the following step: controlling the inlet and the outlet to be both closed.

[0141] In one embodiment, the computer program, when executed by the processor, further implements the following step: controlling an ultraviolet light catalysis module in the purification device to be turned on when the pollutant removal rate decay amount is in a first preset range, wherein a minimum value of the first preset range is greater than or equal to the preset pollution threshold.

[0142] In one embodiment, the computer program, when executed by the processor, further implements the following step: controlling a plasma purification module in the purification device to be turned on when the pollutant removal rate decay amount is in a second preset range, wherein a minimum value of the second preset range is greater than a maximum value of the first preset range.

[0143] In one embodiment, the computer program, when executed by the processor, further implements the following step: controlling a heating module in the purification device to be turned on when the pollutant removal rate decay amount is in a third preset range, wherein a minimum value of the third preset range is greater than a maximum value of the second preset range.

[0144] In one embodiment, the computer program, when executed by the processor, further implements the following step: controlling the ultraviolet light catalysis module and the plasma purification module in the purification device to be turned on.

[0145] In one embodiment, the computer program, when executed by the processor, further implements the following steps: determining an initial pollutant removal rate according to the inlet parameter and the outlet parameter at the historical time; determining a current pollutant removal rate according to the inlet parameter and the outlet parameter at the current time; and determining the current pollutant removal rate decay of the filter screen based on the current pollutant removal rate and the initial pollutant removal rate.

[0146] In one embodiment, the computer program, when executed by the processor, further implements the following steps: returning to the step of obtaining the inlet parameter of the inlet of the purification device and the outlet parameter of the outlet.

[0147] In one embodiment, a computer program product is provided, comprising a computer program which, when executed by the processor, implements the following steps:

[0148] obtaining the inlet parameter of the inlet of the purification device and the outlet parameter of the outlet;

[0149] determining a pollutant removal rate decay of a filter screen of the purification device according to the inlet parameter and the outlet parameter;

[0150] controlling a purification device of the purification device based on the pollutant removal rate decay.

[0151] In one embodiment, the computer program, when executed by the processor, further implements the following steps: controlling a filter screen purification module in the purification device to be turned on in a case where the pollutant removal rate decay is greater than a preset pollution threshold.

[0152] In one embodiment, the computer program, when executed by the processor, further implements the following steps: controlling the inlet and the outlet to be both closed.

[0153] In one embodiment, the computer program, when executed by the processor, further implements the following steps: controlling an ultraviolet photocatalysis module in the purification device to be turned on in a case where the pollutant removal rate decay is in a first preset range, wherein a minimum value of the first preset range is greater than or equal to the preset pollution threshold.

[0154] In one embodiment, the computer program, when executed by the processor, further implements the following steps: controlling a plasma purification module in the purification device to be turned on in a case where the pollutant removal rate decay is in a second preset range, wherein a minimum value of the second preset range is greater than a maximum value of the first preset range.

[0155] In one embodiment, the computer program, when executed by the processor, further implements the following steps: controlling a heating module in the purification device to be turned on in a case where the pollutant removal rate decay is in a third preset range, wherein a minimum value of the third preset range is greater than a maximum value of the second preset range.

[0156] In one embodiment, the computer program, when executed by the processor, further implements the following steps: controlling the ultraviolet light catalysis module and the plasma purification module in the purification device to be turned on.

[0157] In one embodiment, the computer program, when executed by the processor, further implements the following steps: determining an initial pollutant removal rate according to the inlet parameter and the outlet parameter at a historical time; determining a current pollutant removal rate according to the inlet parameter and the outlet parameter at a current time; and determining a current pollutant removal rate decay amount of the filter screen based on the current pollutant removal rate and the initial pollutant removal rate.

[0158] In one embodiment, the computer program, when executed by the processor, further implements the following steps: returning to the step of acquiring the inlet parameter of the inlet of the purification device and the outlet parameter of the outlet.

[0159] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiment methods. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. The non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. The volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., without being limited thereto.

[0160] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0161] The above-described embodiments are merely illustrative of several embodiments of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A method for controlling filter purification in a purification device, characterized in that, The method includes: Obtain the air inlet parameters and the air outlet parameters of the purification device; The pollutant removal rate reduction of the filter screen of the purification equipment is determined based on the inlet parameters and the outlet parameters. The purification device controls the purification equipment based on the pollutant removal rate attenuation. The purification device that controls the purification equipment based on the pollutant removal rate attenuation includes: When the decrease in pollutant removal rate is greater than a preset pollution threshold, the filter purification module in the purification device is turned on. If the pollutant removal rate decreases by more than a preset pollution threshold, the method further includes the following steps before activating the filter purification module in the purification device: Both the air inlet and the air outlet are closed to create a closed environment.

2. The method according to claim 1, characterized in that, After the filter purification module in the purification device is turned on when the pollutant removal rate decreases by more than a preset pollution threshold, the method further includes: When the filter purification module has been turned on for a preset purging time, the filter purification module is controlled to turn off.

3. The method according to claim 1, characterized in that, The purification device that controls the purification equipment based on the pollutant removal rate attenuation further includes: If the decrease in the pollutant removal rate is less than or equal to the preset pollution threshold, the modules in the purification device shall be controlled to stop operating.

4. The method according to claim 3, characterized in that, After the filter purification module in the purification device is turned on when the pollutant removal rate decreases by more than a preset pollution threshold, the method further includes: When the pollutant removal rate attenuation is within a first preset range, the ultraviolet photocatalytic module in the purification device is turned on, wherein the minimum value of the first preset range is greater than or equal to the preset pollution threshold.

5. The method according to claim 4, characterized in that, After the filter purification module in the purification device is turned on when the pollutant removal rate decreases by more than a preset pollution threshold, the method further includes: When the pollutant removal rate decreases within a second preset range, the plasma purification module in the purification device is activated, wherein the minimum value of the second preset range is greater than the maximum value of the first preset range.

6. The method according to claim 5, characterized in that, After the filter purification module in the purification device is turned on when the pollutant removal rate decreases by more than a preset pollution threshold, the method further includes: When the pollutant removal rate decreases within a third preset range, the heating module in the purification device is turned on, wherein the minimum value of the third preset range is greater than the maximum value of the second preset range.

7. The method according to claim 6, characterized in that, When the pollutant removal rate attenuation is within a third preset range, the method further includes: The ultraviolet photocatalytic module and plasma purification module in the purification device are turned on.

8. The method according to claim 1, characterized in that, The step of determining the pollutant removal rate reduction of the filter screen of the purification equipment based on the inlet air parameters and the outlet air parameters includes: The initial pollutant removal rate is determined based on the inlet and outlet parameters at historical times. The current pollutant removal rate is determined based on the current intake parameters and the current exhaust parameters; The current pollutant removal rate decay of the filter is determined based on the current pollutant removal rate and the initial pollutant removal rate.

9. The method according to any one of claims 1 to 8, characterized in that, After the purification device controls the purification equipment based on the pollutant removal rate attenuation, the method further includes: Return to the execution step: Obtain the air inlet parameters and the air outlet parameters of the purification device.

10. A filter purification control device for a purification equipment, characterized in that, The apparatus for implementing the method of any one of claims 1 to 9, comprising: The parameter acquisition module is used to acquire the air inlet parameters and the air outlet parameters of the purification device. The attenuation determination module is used to determine the attenuation of the pollutant removal rate of the filter screen of the purification equipment based on the inlet parameters and the outlet parameters. The purification control module is used to control the purification device of the purification equipment based on the pollutant removal rate attenuation. The purification device that controls the purification equipment based on the pollutant removal rate attenuation includes: controlling the filter purification module in the purification device to turn on when the pollutant removal rate attenuation is greater than a preset pollution threshold; before controlling the filter purification module in the purification device to turn on when the pollutant removal rate attenuation is greater than the preset pollution threshold, the method further includes: controlling both the air inlet and the air outlet to close to form a closed environment.

11. A purification device, characterized in that, The device includes a controller and a purification device connected to each other; wherein an air duct is formed between the air inlet and the air outlet of the purification device, and a filter and a purification device are provided on the air duct, and the controller is used to implement the steps of the method according to any one of claims 1 to 9.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 9.

13. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 9.

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