CN109406132B - Filter element service life monitoring method and device and air purification equipment - Google Patents
Filter element service life monitoring method and device and air purification equipment Download PDFInfo
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- CN109406132B CN109406132B CN201811579636.0A CN201811579636A CN109406132B CN 109406132 B CN109406132 B CN 109406132B CN 201811579636 A CN201811579636 A CN 201811579636A CN 109406132 B CN109406132 B CN 109406132B
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Abstract
The application provides a method and a device for monitoring the service life of a filter element and air purification equipment, wherein the filter element is used for decomposing pollutants to obtain target substances, and the method comprises the following steps: monitoring the concentration of a target substance in the process of purifying air by adopting a filter element; the filter element life is determined based on the monitored concentration of the target substance. The method can solve the technical problem that the accuracy of the determination result of the service life of the filter element is low in the prior art, and then the service life of the filter element is accurately identified, so that the related problems caused by incorrect identification of the service life of the filter element can be avoided, for example, the condition that the purification performance is reduced because the filter element at the end of the service life is still in service can be avoided, or the condition that the resource is wasted because the filter element which is not at the end of the service life is replaced can be avoided.
Description
Technical Field
The application relates to the technical field of electrical equipment, in particular to a method and a device for monitoring the service life of a filter element and air purification equipment.
Background
With the improvement of living standard of people, air purification equipment such as air conditioners, air purifiers and the like gradually appear in thousands of families and office places. At present, the effective service time of the filter element is preset by the air purification equipment, and when the service time of the filter element reaches the effective service time, a user is reminded to replace the filter element.
However, in practical applications, the service life of the filter element is affected by various factors, for example, the service life of the filter element is different according to the environment of the space where the air purifying device is located, and therefore, the determination result is not accurate in the above manner for determining the service life of the filter element.
Disclosure of Invention
The application provides a filter element service life monitoring method, a filter element service life monitoring device and air purification equipment, so that the service life of a filter element can be accurately identified, and related problems caused by incorrect identification of the service life of the filter element can be avoided, for example, the condition that the purification performance is reduced because the filter element at the end of the service life is still in service can be avoided, or the condition that the resource waste is caused because the filter element at the end of the service life is replaced can be avoided, and the technical problem that the accuracy of a filter element service life determination result in the prior art is low is solved.
An embodiment of an aspect of the present application provides a method for monitoring a lifetime of a filter element, where the filter element is configured to decompose a pollutant to obtain a target substance, and the method includes:
monitoring the concentration of the target substance during the air purification process by adopting the filter element;
determining the filter cartridge life based on the monitored concentration of the target substance.
In another aspect, an embodiment of the present application provides a device for monitoring the lifetime of a filter element, the filter element being used for decomposing a pollutant to obtain a target substance, the device comprising:
the monitoring module is used for monitoring the concentration of the target substance in the process of adopting the filter element to purify air;
a determination module to determine the filter cartridge life based on the monitored concentration of the target substance.
In another aspect, an embodiment of the present application provides an air purification apparatus, the air purification apparatus includes a filter element, the filter element is used for decomposing pollutants to obtain a target substance, the air purification apparatus further includes: the filter element life monitoring system comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the filter element life monitoring method provided by the previous embodiment of the application.
In yet another aspect, a computer-readable storage medium is provided, on which a computer program is stored, which when executed by a processor implements a method for monitoring the life of a filter cartridge as provided in the previous embodiments of the present application.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: on one hand, the concentration of the target substance is monitored in the process of air purification by the filter element, and the service life of the filter element is determined according to the monitored concentration of the target substance, wherein the target substance is obtained by decomposing pollutants by the filter element, so that the technical problem of low accuracy of the determination result of the service life of the filter element in the prior art can be effectively solved, and the service life of the filter element can be accurately identified, thereby avoiding the related problems caused by incorrect identification of the service life of the filter element, for example, the condition that the purification performance is reduced because the filter element at the end of the service life is still in service can be avoided, or the condition that the resource is wasted because the filter element which is not at the end of the service life is replaced can be avoided.
On the other hand, different modes are adopted to determine the service life of the filter element, so that the determination mode of the service life of the filter element can be enriched, and the flexibility and the applicability of the method are improved.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart illustrating a method for monitoring a lifetime of a filter element according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart illustrating a method for monitoring a lifetime of a filter element according to a second embodiment of the present application;
fig. 3 is a schematic flow chart illustrating a method for monitoring a lifetime of a filter element according to a third embodiment of the present application;
fig. 4 is a schematic flow chart illustrating a method for monitoring the service life of a filter element according to a fourth embodiment of the present application;
fig. 5 is a schematic structural diagram of a filter element life monitoring device according to a fifth embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The application mainly aims at the technical problem that the accuracy of a filter element service life determination result in the prior art is low, and provides a filter element service life monitoring method.
According to the filter element service life monitoring method, the concentration of the target substance is monitored in the process of air purification through the filter element, the service life of the filter element is determined according to the monitored concentration of the target substance, and the target substance is obtained by decomposing the pollutant through the filter element. In this application, according to the concentration of target material, can confirm the purification performance and the purifying effect of filter core, and then according to purification performance or purifying effect, can confirm the filter core life-span, from this, can accurately discern the filter core life-span to can avoid incorrectly discerning the filter core life-span and the relevant problem that leads to, for example, can avoid the filter core at last stage of life still to be in service and lead to the condition that purifying performance descends, or can avoid the filter core that has not arrived at last stage of life to be replaced and cause the condition of wasting of resources.
The following describes a filter element life monitoring method, a filter element life monitoring device and air purification equipment according to an embodiment of the application with reference to the drawings.
Fig. 1 is a schematic flow chart of a method for monitoring a lifetime of a filter element according to an embodiment of the present disclosure.
The embodiment of the application exemplifies that the filter element service life monitoring method is configured in a filter element service life monitoring device, and the filter element service life monitoring device can be applied to air purification equipment so that the air purification equipment executes a filter element service life monitoring function. The air purification device refers to a related device having an air purification function, and may be, for example, an air purifier, an air conditioner, or the like.
In the embodiment of the application, the filter element is used for decomposing the pollutants to obtain the target substances.
It can be understood that, for solid pollutants (such as inhalable particulate matter PM10, PM2.5, etc.), when the air purification apparatus is used to filter them, the filter element is mainly used to adsorb them so as to achieve the purpose of purifying air, and for gaseous pollutants (such as formaldehyde, Total Volatile Organic Compounds (TVOC), etc.), the filter element can be used to decompose them so as to obtain the target substance.
Therefore, in the embodiment of the present application, the pollutant may be specifically a gas pollutant, such as formaldehyde, chlorine-containing volatile organic compounds (Cl — VOCs), and the like. The filter element can decompose pollutants to obtain target substances, for example, the filter element can decompose formaldehyde to obtain carbon dioxide CO2And water H20, in this case, the target substance can be carbon dioxide, or the filter element can decompose the chlorine-containing volatile organic compounds to obtain carbon dioxide CO2Water H20 and others, and in this case, the target substance may be carbon dioxide.
As shown in fig. 1, the method for monitoring the service life of the filter element comprises the following steps:
In the embodiment of the application, after the user opens air purification equipment, can adopt the filter core to purify the air, at this moment, the filter core can decompose the pollutant, obtains the target material. During the air purification process, a relevant sensor can be used to detect the concentration of the target substance.
For example, when the target substance is carbon dioxide, the concentration of the target substance may be detected using a carbon dioxide sensor.
It can be understood that, within a preset time period, if the concentration of the target substance rises obviously, it indicates that the filter element decomposes more pollutants, and the air purification device has a stronger purification capacity, at this time, the non-end of life of the filter element can be determined, and if the concentration of the target substance does not change obviously or does not change, it indicates that the filter element decomposes less pollutants, or the filter element does not decompose the pollutants, at this time, it can be determined that the life of the filter element is the end of life.
Thus, in embodiments of the present application, the filter element life can be determined based on the monitored concentration of the target substance. For example, the filter life may be determined according to the amount of change in the concentration of the target substance in a preset time period, or the filter life may be determined according to the amount of change in the concentration of the target substance per unit time, which is not limited thereto. Therefore, the service life of the filter element can be accurately identified, and the related problems caused by incorrect identification of the service life of the filter element can be avoided, for example, the condition that the purification performance is reduced because the filter element at the end of the service life is still in service can be avoided, or the condition that the filter element which is not at the end of the service life is replaced to cause resource waste can be avoided.
It should be noted that, although a relevant sensor may be adopted to directly detect the concentration of the pollutant, and the life of the chip is determined according to the concentration of the pollutant, for example, when the pollutant is formaldehyde, the formaldehyde concentration may be detected by the formaldehyde sensor, and if the formaldehyde concentration is reduced significantly within a preset time period, at this time, it may be determined that the purification effect of the air purification device is better, and then the end of the filter element life non-life is determined. However, the formaldehyde sensor has a short life, and if the formaldehyde sensor is installed in the air purification apparatus, the formaldehyde sensor needs to be replaced frequently, for example, the formaldehyde sensor needs to be replaced half a year or a year, which is high in cost.
In the embodiment of the present application, the lifetime of the chip is determined according to the concentration of the target substance obtained by decomposing the pollutant, for example, when the target substance is carbon dioxide, the lifetime of the carbon dioxide sensor is long, and therefore, the target substance does not need to be replaced frequently, and the cost can be reduced. And moreover, the concentration of the target substance is detected through the related sensor, the service life of the filter element is determined according to the concentration of the target substance, and the situations such as risks caused by introducing an additional immature technology can be avoided.
According to the filter element service life monitoring method, the concentration of the target substance is monitored in the process of air purification through the filter element, the service life of the filter element is determined according to the monitored concentration of the target substance, and the target substance is obtained by decomposing the pollutant through the filter element. In this application, according to the concentration of target material, can confirm the purification performance and the purifying effect of filter core, and then according to purification performance or purifying effect, can confirm the filter core life-span, from this, can accurately discern the filter core life-span to can avoid incorrectly discerning the filter core life-span and the relevant problem that leads to, for example, can avoid the filter core at last stage of life still to be in service and lead to the condition that purifying performance descends, or can avoid the filter core that has not arrived at last stage of life to be replaced and cause the condition of wasting of resources.
As a possible implementation manner, the concentration of the target substance of the air purification device before the air purification process starts and the concentration of the target substance in a preset time period after the air purification process starts may be obtained, and the service life of the filter element is determined according to the difference between the concentrations of the target substance monitored at two time points. The above process is described in detail below with reference to fig. 2.
Fig. 2 is a schematic flow chart of a filter element life detection method according to a second embodiment of the present application.
As shown in fig. 2, based on the embodiment shown in fig. 1, step 102 may specifically include the following sub-steps:
in step 201, the concentration of the target substance before the air purification process is started is obtained.
In the embodiment of the application, before the air purification process begins, it means that the filter element does not purify the air, namely before the filter element purifies the air. The concentration of the target substance before the air cleaning process is started may be detected by the relevant sensor.
For example, the concentration of the target substance may be detected by the relevant sensor when the user does not trigger the purification function after the air purification apparatus is turned on. Specifically, after the user starts the air purification apparatus by touching a virtual key or an entity key of the air purification apparatus, or after the user starts the air purification apparatus by an Application program (APP for short) on the mobile terminal, and the user does not trigger the purification function, at this time, before the air purification process of the air purification apparatus begins, the concentration of the target substance may be detected by a relevant sensor, for example, the concentration of the target substance before the air purification process begins is marked as C1.
The mobile terminal can be a hardware device with various operating systems, touch screens and/or display screens, such as a mobile phone, a tablet computer, a personal digital assistant, a wearable device, a vehicle-mounted device, and the like.
In the embodiment of the present application, the preset time period is preset, for example, may be preset for a built-in program of the air purification apparatus, or may also be set by a user, which is not limited to this, for example, the preset time period may be 30min, 1h, and the like. The preset time period after the air purification process is started refers to a preset time period after the air purification equipment is started and the air is purified by the filter element, for example, 30min after the air is purified by the filter element.
In the embodiment of the application, after a preset time period after the air purification process is started, for example, after the air purification device is turned on, 30min after the air is purified by the filter element, the concentration of the target substance may be collected by the relevant sensor, for example, the concentration of the target substance in the preset time period after the air purification process is started is marked as C2, and the difference between C2 and C1 is obtained, so that the concentration difference between the concentration of the target substance in the preset time period after the air purification process is started and the concentration of the target substance before the air purification process is started is | C2-C1 |. Therefore, after the air purification process is started, the concentration of the target substance collected by the relevant sensor in real time can be compared with the concentration of the target substance before the air purification process is started to determine the service life of the filter element, and the accuracy of determining the service life of the filter element in the subsequent steps can be improved.
And step 203, determining the service life of the filter element according to the concentration difference.
It can be understood that when the service life of the filter element is not at the end of the service life, the purification performance of the filter element is better, and the target substances obtained by decomposition are more and more, and the concentration of the target substances in the space where the air purification equipment is located is higher and higher. Therefore, as a possible implementation manner of the embodiment of the present application, it may be determined whether the concentration difference | C2-C1| is lower than the first threshold, if so, the lifetime of the filter element is determined to be the end of the lifetime, and if not, the non-end of the lifetime of the filter element is determined. The first threshold is preset, for example, preset by a built-in program of the air purification apparatus, or may be set by a user, which is not limited thereto.
It should be noted that when the spaces of the air purification apparatus are different, due to external factors such as space size difference, ambient temperature, humidity difference, etc., the filter element may have a significant change in the measured concentration of the target substance under the same purification efficiency, for example, if the volume of the space a is smaller than that of the space B, the target substance obtained by the decomposition of the filter element in the space a is assumed to be as much as the target substance obtained by the decomposition of the filter element in the space B, and since the volume of the space a is smaller than that of the space B, the concentration of the target substance in the space a is greater than that in the space B, and therefore, the filter element life is determined according to whether the concentration difference | C2-C1| is lower than the first threshold, which may affect the accuracy of the determination result.
Therefore, as another possible implementation manner of the embodiment of the application, an increase coefficient can be calculated according to the concentration difference | C2-C1| and the service life of the filter element can be determined according to the increase coefficient. Specifically, the increase coefficient may be obtained by taking the ratio of the concentration difference | C2-C1| to the concentration C1 of the target substance before the air purification process starts. As the purification capacity is gradually weakened along with the continuous use of the filter element, and the growth coefficient is continuously reduced, whether the growth coefficient is lower than a third threshold value or not can be judged, if so, the purification capacity of the filter element is relatively weak, at the moment, the service life of the filter element can be determined to be the end stage of the service life, and if not, the end stage of the non-service life of the filter element is determined. The third threshold is preset, and may be preset, for example, by a built-in program of the air purification apparatus, or may be set by a user, which is not limited thereto.
As another possible implementation manner of the embodiment of the present application, the filter element life may also be determined according to the growth coefficient and a preset reference growth coefficient.
As a possible implementation manner, a first attenuation magnitude of the increase coefficient and the reference increase coefficient may be calculated, for example, the flag increase coefficient is S1, the reference increase coefficient is S2, and the first attenuation magnitude is D1, then S1 ═ C2-C1|/C1, and D1 ═ S1-S2|/S2, and then, it may be determined whether the first attenuation magnitude D1 is higher than a fourth threshold, if so, it indicates that the attenuation of the purification effect of the filter element is significant, and the purification capability is weak, and at this time, it may be determined that the life of the filter element is the end of the life, and if not, it may be determined that the end of the life of the filter element is the end of the non-life.
As another possible implementation manner, it may be further determined whether the difference | S2-S1| between the increase coefficient S1 and the reference increase coefficient S2 is lower than a fifth threshold, if so, indicating that the purification capacity of the filter element is weak, and at this time, the life of the filter element may be determined to be the end of life, and if not, the end of non-life of the filter element may be determined.
The fourth threshold and the fifth threshold are preset, and may be preset for a built-in program of the air purification apparatus, or may be set by a user, which is not limited thereto.
For example, formaldehyde is used as the pollutant, and CO is used as the target material2As an example, suppose that after the air cleaning apparatus is started, the CO in the room2Concentration 400ppm, CO in the room after 10 minutes2The concentration is 420ppm, the growth factor S1| 420 |/400 |/0.05, the reference growth factor S2| -0.125, and the fourth threshold value is 50%, D1 |0.05-0.125|/0.125 | -60%>50 percent, therefore, the attenuation of the aldehyde removal effect of the filter element is determined to be obvious, and the service life of the filter element is the end of the service life.
It should be noted that, in the above example, only the reference growth coefficient is preset, and in actual application, when the reference growth coefficient is preset for a built-in program of the air purification apparatus, a value of the reference growth coefficient is related to a calibration environment before leaving a factory, such as a space size difference, an ambient temperature, a humidity difference, and the like, and a large difference may exist in reference growth coefficients corresponding to different spaces, so that accuracy of a filter element life judgment result is affected. Specifically, the reference growth coefficient can be obtained by taking the ratio of the concentration difference in unit time when the filter element is used for the first time to the concentration of the target substance monitored when the filter element is used for the first time.
Further, when the filter element service life is at the end of the service life, a user can be prompted to remind the user to replace the filter element, for example, voice broadcasting can be performed through air purification equipment, or prompt information can be sent to the user through APP of control electrical equipment on the mobile terminal, and therefore limitation is not imposed. And when the service life of the filter element is not at the end of the service life, the concentration of the target substance can be continuously monitored so as to monitor the service life of the filter element in real time, namely, the step 202 and the subsequent steps are executed again.
The filter element service life monitoring method provided by the embodiment of the application can determine the service life of the filter element through the purification effect or purification capacity of the filter element, and can improve the accuracy of the determination result of the service life of the filter element.
As a possible implementation, the filter element life may also be determined based on the amount of change in the concentration of the target substance per unit time. The above process is described in detail below with reference to fig. 3.
Fig. 3 is a schematic flow chart of a method for monitoring a lifetime of a filter element according to a third embodiment of the present application.
As shown in fig. 3, based on the embodiment shown in fig. 1, step 102 may specifically include the following sub-steps:
In the embodiment of the present application, the unit time is preset, and may be, for example, 1min, 10min, and the like. The concentration change amount may be an absolute change amount of the concentration, or may be a relative change amount of the concentration, and is not limited thereto. For example, when the change amount of the marker concentration is T0, the concentration of the target substance detected at the previous time of the marker is C3, and the concentration of the target substance detected at the current time is C4, the absolute change amount of the concentration is T0 ═ C4-C3|, and the relative change amount of the concentration is T0 ═ C4-C3 |/C3.
And step 302, determining the service life of the filter element according to the concentration variation.
It can be understood that when the service life of the filter element is not at the end of the service life, the purification performance of the filter element is better, and the target substances obtained by decomposition are more and more, and the concentration of the target substances in the space where the air purification equipment is located is higher and higher. Thus, when the amount of concentration change per unit time is high, the end of life of the filter element can be determined, and when the amount of concentration change per unit time is low, the end of life of the filter element can be determined.
As a possible implementation manner, whether the concentration variation is lower than the sixth threshold may be determined, if so, it indicates that the purification capacity of the filter element is weak, at this time, the life of the filter element may be determined to be the end of the life, and if not, the end of the non-life of the filter element may be determined. The sixth threshold is preset, and may be preset, for example, by a built-in program of the air purification apparatus, or may be set by a user, which is not limited thereto.
According to the filter element service life monitoring method, the service life of the filter element is determined according to the concentration variation in unit time, and the accuracy of the determination result can be improved.
As another possible implementation manner, a reference concentration variation may be set, a concentration variation difference between the concentration variation and the reference concentration variation is calculated, and the filter element life is determined according to the concentration variation difference. The above process is described in detail below with reference to fig. 4.
Fig. 4 is a schematic flow chart of a method for monitoring a lifetime of a filter element according to a fourth embodiment of the present application.
As shown in fig. 4, based on the embodiment shown in fig. 3, step 302 may specifically include the following sub-steps:
in step 401, for the density variation, a density variation difference from the set reference density variation is calculated.
As a possible implementation manner of the embodiment of the present application, the reference concentration variation may be preset, for example, marked as T1, and the concentration variation difference between the concentration variation T0 and the reference concentration variation T1 per unit time is | T1-T0 |.
It should be noted that, in the above example, only the reference concentration variation is preset, and in actual application, when the reference concentration variation is preset as a built-in program of the air purification apparatus, a value of the reference concentration variation is related to a calibration environment before leaving a factory, such as a space size difference, an environmental temperature and humidity difference, and the like, a large difference may exist in reference concentration variations corresponding to different spaces, so that accuracy of a filter element life judgment result is affected. Therefore, as another possible implementation manner of the embodiment of the present application, the monitored concentration C0 when the filter cartridge is used for the first time may be obtained, the concentration variation per unit time when the filter cartridge is used for the first time is determined, and then, the reference concentration variation T1 is set according to the concentration variation per unit time when the filter cartridge is used for the first time.
And step 402, determining the service life of the filter element according to the concentration variation difference.
It can be understood that when the service life of the filter element is not at the end of the service life, the purification performance of the filter element is better, and the target substances obtained by decomposition are more and more, and the concentration of the target substances in the space where the air purification equipment is located is higher and higher. Therefore, as a possible implementation manner of the embodiment of the present application, it may be determined whether the concentration variation difference | T1-T0| is lower than the second threshold, if so, the lifetime of the filter element is determined to be the end of the lifetime, and if not, the non-end of the lifetime of the filter element is determined. The second threshold is preset, and may be preset for a built-in program of the air purification apparatus, or may be set by a user, which is not limited thereto.
It should be noted that when the spaces where the air purification apparatus are located are different, due to external factors such as the size difference of the spaces, the humidity difference of the ambient temperature, etc., the concentration of the target substance measured by the filter element may significantly change at the same purification efficiency, for example, if the volume of the space a is smaller than the volume of the space B, and if the target substance obtained by the decomposition of the filter element in the space a and the target substance obtained by the decomposition of the filter element in the space B are different, since the volume of the space a is smaller than the volume of the space B, the concentration of the target substance in the space a is greater than the concentration of the target substance in the space B, and therefore, the life of the filter element is determined according to whether the concentration variation difference | T1-T0| is lower than the second threshold, which may affect the.
Therefore, as another possible implementation manner of the embodiment of the present application, a real-time increase coefficient may also be calculated according to the concentration variation T0 in unit time, and the filter element life may be determined according to the real-time increase coefficient. Specifically, when the real-time increase coefficient U1 is marked, the real-time increase coefficient U1 is T0/C3 is | C4-C3|/C3, and as the purification capacity of the filter element is gradually reduced along with continuous use of the filter element, the increase coefficient is continuously reduced, so that whether the real-time increase coefficient U1 is lower than a seventh threshold value or not can be judged, if so, the purification capacity of the filter element is weak, at this time, the service life of the filter element can be determined to be the end of the service life, and if not, the end of the non-service life of the filter element is determined.
The seventh threshold is preset, and may be preset for a built-in program of the air purification apparatus, or may be set by a user, which is not limited thereto.
As another possible implementation manner of the embodiment of the present application, the filter element life may also be determined according to the real-time increase coefficient and the reference concentration increase coefficient. The reference density increase coefficient may be preset, or may be determined according to the reference density variation T1, for example, if the reference density increase coefficient is U2, U2 is T1/C0.
As a possible implementation manner, it may be determined whether the difference | U2-U1| between the real-time increase coefficient U1 and the reference concentration increase coefficient U2 is lower than the eighth threshold, if so, it indicates that the purification capability of the filter element is weak, at this time, the life of the filter element may be determined as the end of the life, and if not, it may be determined as the end of the non-life of the filter element.
As another possible implementation manner, a second attenuation magnitude between the real-time increase coefficient U1 and the reference concentration increase coefficient U2 may be further calculated, for example, if the second attenuation magnitude is D2, then D2 ═ U2-U1|/U2, then, it may be determined whether the second attenuation magnitude is higher than a ninth threshold, if so, it indicates that the purifying effect of the filter element is attenuated significantly, and the purifying capability is weak, at this time, it may be determined that the life of the filter element is at the end of the life, and if not, it may be determined that the life of the filter element is at the end of the non-life.
The eighth threshold and the ninth threshold are preset, and may be preset for a built-in program of the air purification apparatus, or may be set by a user, which is not limited thereto.
For example, assuming that the ninth threshold is 50%, the monitored concentration C0 when the filter element is used for the first time is 400ppm, and the obtained concentration after the unit time Δ T is 450ppm, the reference concentration increase coefficient U2 is (450-.
The values of the first threshold, the second threshold, …, the eighth threshold, and the ninth threshold may be the same or different, and are not limited thereto.
In order to realize the embodiment, the application also provides a filter element service life monitoring device.
Fig. 5 is a schematic structural diagram of a filter element life monitoring device according to a fifth embodiment of the present application.
In the embodiment of the application, the filter element is used for decomposing the pollutants to obtain the target substances.
As shown in fig. 5, the filter cartridge life monitoring device includes: a monitoring module 101 and a determination module 102.
The monitoring module 101 is configured to monitor the concentration of a target substance in an air purification process using a filter element.
As a possible implementation, the filter element may be a formaldehyde removal filter element, in which case the target substance may be carbon dioxide.
A determination module 102 determines a filter cartridge life based on the monitored concentration of the target substance.
As a first possible implementation manner, the determining module 102 is specifically configured to: acquiring the concentration of a target substance before the air purification process starts; calculating a concentration difference value, wherein the concentration difference value is a concentration difference value between the concentration of the target substance in a preset time period after the air purification process starts and the concentration of the target substance before the air purification process starts; and determining the service life of the filter element according to the concentration difference.
As a second possible implementation manner, the determining module 102 is specifically configured to: and if the concentration difference is lower than the first threshold value, determining the service life of the filter element as the end of the service life.
As a third possible implementation manner, the determining module 102 is specifically configured to: determining the concentration variation in unit time according to the monitored concentration of the target substance; and determining the service life of the filter element according to the concentration variation.
As a fourth possible implementation manner, the determining module 102 is specifically configured to: calculating a concentration variation difference from a set reference concentration variation for the concentration variation; and determining the service life of the filter element according to the concentration variation difference.
As a fifth possible implementation manner, the determining module 102 is specifically configured to: and if the concentration variation difference is lower than the second threshold, determining the service life of the filter element as the end of the service life.
As a sixth possible implementation manner, the determining module 102 is further configured to: determining the concentration variation in unit time when the filter element is used for the first time according to the monitored concentration when the filter element is used for the first time; and setting a reference concentration variation according to the concentration variation in unit time when the filter element is used for the first time.
It should be noted that the foregoing explanation of the embodiment of the method for monitoring the service life of the filter element is also applicable to the device for monitoring the service life of the filter element of this embodiment, and will not be described herein again.
The filter element life monitoring device provided by the embodiment of the application monitors the concentration of a target substance in the air purification process by adopting the filter element, and determines the service life of the filter element according to the monitored concentration of the target substance, wherein the target substance is obtained by decomposing the pollutant by the filter element. In this application, according to the concentration of target material, can confirm the purification performance and the purifying effect of filter core, and then according to purification performance or purifying effect, can confirm the filter core life-span, from this, can accurately discern the filter core life-span to can avoid incorrectly discerning the filter core life-span and the relevant problem that leads to, for example, can avoid the filter core at last stage of life still to be in service and lead to the condition that purifying performance descends, or can avoid the filter core that has not arrived at last stage of life to be replaced and cause the condition of wasting of resources.
In order to achieve the above embodiments, the present application further provides an air purification apparatus, which includes a filter element, the filter element is used for decomposing pollutants to obtain a target substance, and the air purification apparatus further includes: the filter element life monitoring method comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the program, the filter element life monitoring method provided by the previous embodiment of the application is realized.
In order to achieve the above embodiments, the present application further proposes a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the filter cartridge life monitoring method as proposed in the foregoing embodiments of the present application.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (5)
1. A method of monitoring the life of a filter element used to decompose a contaminant material to a target material, the method comprising the steps of:
monitoring the concentration of the target substance during the air purification process by adopting the filter element;
determining the filter element life based on the monitored concentration of the target substance;
said determining said filter cartridge life based on said monitored concentration of said target substance comprises:
acquiring the concentration of the target substance before the air purification process is started;
calculating a concentration difference value, wherein the concentration difference value is a concentration difference value between the concentration of the target substance in a preset time period after the start of the air purification process and the concentration of the target substance before the start of the air purification process;
determining the service life of the filter element according to the concentration difference;
said determining said filter cartridge life based on said concentration difference comprises:
the concentration difference value is compared with the concentration of the target substance before the air purification process begins, and a growth coefficient is determined;
determining a first attenuation amplitude according to the increase coefficient and a preset reference increase coefficient;
determining the filter element life based on the first attenuation magnitude.
2. The method for monitoring the service life of a filter element according to claim 1, wherein the filter element is a formaldehyde removal filter element; the target substance is carbon dioxide.
3. A filter cartridge life monitoring device, wherein the filter cartridge is configured to decompose a contaminant material to a target material, the device comprising:
the monitoring module is used for monitoring the concentration of the target substance in the process of adopting the filter element to purify air;
a determination module to determine the filter cartridge life based on the monitored concentration of the target substance;
the determining means is particularly adapted to determine,
acquiring the concentration of the target substance before the air purification process is started;
calculating a concentration difference value, wherein the concentration difference value is a concentration difference value between the concentration of the target substance in a preset time period after the start of the air purification process and the concentration of the target substance before the start of the air purification process;
the concentration difference value is compared with the concentration of the target substance before the air purification process begins, and a growth coefficient is determined;
determining a first attenuation amplitude according to the increase coefficient and a preset reference increase coefficient;
determining the filter element life based on the first attenuation magnitude.
4. An air purification device, characterized in that, air purification device includes the filter core, the filter core is used for carrying out the decomposition to the pollutant and obtains the target material, air purification device still includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, when executing the program, implementing the filter cartridge life monitoring method of any of claims 1-2.
5. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out a method for monitoring the life of a filter cartridge according to any one of claims 1-2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811579636.0A CN109406132B (en) | 2018-12-24 | 2018-12-24 | Filter element service life monitoring method and device and air purification equipment |
| PCT/CN2019/113057 WO2020134438A1 (en) | 2018-12-24 | 2019-10-24 | Filter element life monitoring method and device and air purifying equipment |
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| CN201811579636.0A CN109406132B (en) | 2018-12-24 | 2018-12-24 | Filter element service life monitoring method and device and air purification equipment |
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| CN109406132B true CN109406132B (en) | 2020-08-25 |
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| CN109406132B (en) * | 2018-12-24 | 2020-08-25 | 广东美的制冷设备有限公司 | Filter element service life monitoring method and device and air purification equipment |
| CN110393985A (en) * | 2019-07-26 | 2019-11-01 | 好空气科技发展有限公司 | Filter element for purifier replacing options based on loss calculation |
| CN112415141B (en) * | 2020-11-06 | 2022-02-08 | 珠海格力电器股份有限公司 | Compensation method and compensation device for formaldehyde measurement concentration display value |
| CN113415129B (en) * | 2021-07-02 | 2022-05-31 | 一汽奔腾轿车有限公司 | Replacement reminding method and system for automobile air conditioner filter element based on environment PM2.5 |
| CN114562793A (en) * | 2022-02-08 | 2022-05-31 | 珠海格力电器股份有限公司 | Performance detection method, device and system of air purification device and storage medium |
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| US6742383B2 (en) * | 2002-11-05 | 2004-06-01 | Industrial Technology Research Institute | Diluter to reduce quantity of micro particles in the air so as to facilitate calculation of concentration of the micro particles in the air |
| KR200365881Y1 (en) * | 2004-07-23 | 2004-10-27 | 주식회사 피코그램 | Filter cartridge and filter housing assembly adapting the same for water purifier system |
| JP5127005B2 (en) * | 2008-05-30 | 2013-01-23 | スコット・テクノロジーズ・インク | Exhaust concentration profile and determination of service life of air purification cartridge |
| CN102019120A (en) * | 2009-09-15 | 2011-04-20 | 林惜珠 | Method for real-time monitoring pollution level of filter layer of air purification machine |
| CN103028423B (en) * | 2012-12-11 | 2015-02-04 | 武汉理工大学 | Inactivation and regeneration method of formaldehyde room-temperature oxidation catalyst |
| DE202013007337U1 (en) * | 2013-08-19 | 2013-09-23 | Stephan Adam | Test case with microprocessor-controlled measuring device for filter saturation and breathing air gas quality |
| CN105080205B (en) * | 2015-09-17 | 2018-03-06 | 北京金山安全软件有限公司 | Purifier filter screen expiration prompting method and device and purifier |
| CN105606505A (en) * | 2016-02-01 | 2016-05-25 | 九阳股份有限公司 | Method and device for confirming service life of purification device of air purifier |
| CN105784977B (en) * | 2016-05-11 | 2018-07-03 | 国家电网公司 | A kind of power transformer method for evaluating reliability |
| CN107774244A (en) * | 2016-08-30 | 2018-03-09 | 天津师范大学 | ZrO2Base catalyst and preparation method thereof and the application in thermal degradation formaldehyde |
| CN106732816B (en) * | 2016-12-08 | 2019-06-25 | 湖北工业大学 | A kind of Pd/TiO2/ cotton fiber composite formaldehyde room-temperature oxidation catalyst and preparation method thereof |
| CN107115757A (en) * | 2017-05-15 | 2017-09-01 | 广东美的环境电器制造有限公司 | The formaldehyde screen replacing method and device of air purifier, air purifier |
| CN107158814B (en) * | 2017-05-16 | 2019-05-07 | 广东美的环境电器制造有限公司 | A kind of method and air purifier of the prompt of strainer filtering efficient state |
| CN107297109A (en) * | 2017-07-25 | 2017-10-27 | 广东美的环境电器制造有限公司 | Air cleaning facility and its filtration members life-span system for prompting and based reminding method |
| CN109406132B (en) * | 2018-12-24 | 2020-08-25 | 广东美的制冷设备有限公司 | Filter element service life monitoring method and device and air purification equipment |
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