CN110624317A - Method and device for calculating service life of filter element - Google Patents
Method and device for calculating service life of filter element Download PDFInfo
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- CN110624317A CN110624317A CN201810646374.9A CN201810646374A CN110624317A CN 110624317 A CN110624317 A CN 110624317A CN 201810646374 A CN201810646374 A CN 201810646374A CN 110624317 A CN110624317 A CN 110624317A
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- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
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Abstract
The invention discloses a method and a device for calculating the service life of a filter element, which comprises the steps of firstly, acquiring the current service life value and the current loss coefficient of the filter element, and acquiring the PM2.5 numerical value of the current air; then, calculating a life deduction value according to the current filter element loss coefficient and the current PM2.5 numerical value of the air; and finally, subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element. Therefore, the real-time life deduction value of the filter element can be calculated by combining the PM2.5 numerical value of the air filtered by the filter element and the filter element loss degree of the filter element at different stages, so that the residual life of the filter element is accurately calculated, and the problem caused by inaccurate calculation of the service life of the filter element is solved; and then can indicate the user's service behavior of filter core so that the user can in time change the filter core, realize that the filter screen belongs to air purifier more efficient provides air purification service for the user, has promoted user experience.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to a method and a device for calculating the service life of a filter element.
Background
With the development of science and technology and the continuous improvement of the demand of people on living quality, the air purifier is gradually popularized in the daily work and life of people as the most direct and effective product for treating indoor air at present. The working principle of the air purifier is as follows: through installing the filter core on air purifier, adsorb, decompose or change various air contaminant, effectively improve air cleanliness factor.
As a core component of the Air purifier, the service life of the filter element is limited, and when the residual service life of the filter element is close to 50% of the Clean Air Delivery Rate (CADR), a new filter element needs to be replaced for the Air purifier in time so as to ensure that effective Air purification capacity is continuously provided for users. It can be seen that accurate calculation of the life of the filter element in an air purifier is important to the air purifier.
The existing method for calculating the service life of the filter element generally adopts the service life of the air purifier in which the filter element is arranged as the service life of the filter element to calculate the residual service life of the filter element. The method for calculating the service life of the filter element can only roughly estimate the service life of the filter element, but cannot accurately obtain the residual service life of the filter element, so that the air purifier to which the filter element belongs can not be guaranteed to effectively purify air for users. Therefore, how to provide a method for calculating the service life of a filter element can accurately calculate the residual service life of the filter element, so as to prompt a user to replace the filter element in time, thereby avoiding the problem of secondary pollution caused by the exhaustion of the service life of the filter element and the problem of waste of the service life of the filter element, and the method is a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a method and a device for calculating the service life of a filter element, so that the accuracy of calculating the service life of the filter element can be improved.
Therefore, the technical scheme for solving the technical problem is as follows:
in a first aspect, an embodiment of the present invention provides a method for calculating a lifetime of a filter element, where the method includes:
acquiring a current service life value and a current filter element loss coefficient of a filter element, and acquiring a PM2.5 numerical value of current air;
calculating a life deduction value according to the current filter element loss coefficient and the current PM2.5 value of the air;
and subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
Optionally, the obtaining the current filter element loss coefficient includes:
acquiring the current gear of a purifier to which the filter element belongs and the current dust holding capacity of the filter element;
and searching a preset loss coefficient table, and determining the loss coefficient corresponding to the current gear and the current dust holding capacity as the current filter element loss coefficient.
Optionally, the method further comprises:
accumulating the life deduction values of the filter elements in a preset period to obtain a total life deduction value;
subtracting the life deduction value from the current life value of the filter element to obtain a remaining life value of the filter element, wherein the step of subtracting the life deduction value from the current life value of the filter element comprises the following steps:
and subtracting the total life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
Optionally, the method further comprises:
and displaying the residual service life value of the filter element.
Optionally, the method further comprises:
and if the residual service life value of the filter element reaches a first threshold value, prompting to replace the filter element.
Optionally, the method further comprises:
and if the residual service life value of the filter element reaches a second threshold value, alarming and triggering a purifier to which the filter element belongs to be closed.
In a second aspect, an embodiment of the present invention further provides a method for calculating a lifetime of a filter element, including:
acquiring the current service life value and the current loss coefficient of the filter element, and acquiring the current concentration of formaldehyde in the air;
calculating a life deduction value according to the current filter element loss coefficient and the current formaldehyde concentration in the air;
and subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
Optionally, the obtaining the current filter element loss coefficient includes:
acquiring a current gear of a purifier to which the filter element belongs and a current formaldehyde adsorption amount of carbon in the filter element;
and searching a preset loss coefficient table, and determining the loss coefficient corresponding to the current gear and the current formaldehyde adsorption amount as the current filter element loss coefficient.
In a third aspect, an embodiment of the present invention further provides a device for calculating a lifetime of a filter element, where the device includes:
the first acquisition module is used for acquiring the current service life value and the current filter element loss coefficient of the filter element and acquiring the PM2.5 numerical value of the current air;
the first calculation module is used for calculating a life deduction value according to the current filter element loss coefficient and the current PM2.5 numerical value of the air;
and the second calculation module is used for subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
Optionally, the first obtaining module includes:
the first acquisition unit is used for acquiring the current gear of the purifier to which the filter element belongs and the current dust holding capacity of the filter element;
and the first searching unit is used for searching a preset loss coefficient table, determining the loss coefficient corresponding to the current gear and the current dust holding capacity, and taking the loss coefficient as the current filter element loss coefficient.
Optionally, the apparatus further comprises:
the third calculation module is used for accumulating the life deduction value of the filter element in a preset period to obtain a total life deduction value;
the second calculation module is specifically configured to:
and subtracting the total life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
Optionally, the apparatus further comprises:
and the display module is used for displaying the residual service life value of the filter element.
Optionally, the apparatus further comprises:
and the prompting module is used for prompting to replace the filter element if the residual service life value of the filter element reaches a first threshold value.
Optionally, the apparatus further comprises:
and the closing module is used for alarming and triggering the purifier to which the filter element belongs to be closed if the residual service life value of the filter element reaches a second threshold value.
In a fourth aspect, an embodiment of the present invention also provides another device for calculating a lifetime of a filter element, including:
the second acquisition module is used for acquiring the current service life value and the current filter element loss coefficient of the filter element and acquiring the current formaldehyde concentration in the air;
the fourth calculation module is used for calculating a life deduction value according to the current filter element loss coefficient and the current formaldehyde concentration in the air;
and the fifth calculation module is used for subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
Optionally, the second obtaining module includes:
the second acquisition unit is used for acquiring the current gear of the purifier to which the filter element belongs and the current formaldehyde adsorption capacity of carbon in the filter element;
and the second searching unit is used for searching a preset loss coefficient table, determining a loss coefficient corresponding to the current gear and the current formaldehyde adsorption amount, and taking the loss coefficient as the current filter element loss coefficient.
According to the technical scheme, the invention has the following beneficial effects:
according to the method and the device for calculating the service life of the filter element, firstly, the current service life value and the current loss coefficient of the filter element are obtained, and the PM2.5 numerical value of the current air is collected; then, calculating a life deduction value according to the current filter element loss coefficient and the current PM2.5 numerical value of the air; and finally, subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element. Therefore, the real-time life deduction value of the filter element can be calculated by combining the PM2.5 numerical value of the air filtered by the filter element and the filter element loss degree of the filter element at different stages, so that the residual life of the filter element is accurately calculated, and the problems caused by inaccurate calculation of the service life of the filter element, such as the problem of secondary pollution caused by the exhausted service life of the filter element or the problem of waste of the service life of the filter element, are solved; and then can indicate the user's service behavior of filter core so that the user can in time change the filter core, realize that the filter screen belongs to air purifier more efficient provides air purification service for the user, has promoted user experience. Of course, the method for calculating the service life of the filter element provided by the embodiment of the invention is also suitable for accurately calculating the service life of the filter element of the formaldehyde air purifier.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for calculating a lifetime of a filter element according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of obtaining a current filter element loss coefficient in step 101 according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating an example of a method for calculating a lifetime of a filter element according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating another method for calculating a lifetime of a filter element according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a device for calculating a lifetime of a filter element according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another filter element life calculating device according to an embodiment of the present invention.
Detailed Description
The service life of the filter element in the air purifier is limited, and once the purifying capacity of the filter element is close to saturation, namely, the residual life of the filter element is close to 0, the filter element needs to be replaced with a new filter element for the air purifier in time so as to ensure that effective air purification service is continuously provided for users. In the conventional method for calculating the residual service life of the filter element, the service life of the air purifier in which the filter element is arranged is generally used as the service life of the filter element, and the service life of the filter element is subtracted from the total service life of the filter element to obtain the residual service life of the filter element. In fact, the remaining life of the filter element is closely related to the opening gear of the air purifier to which the filter element belongs, the concentration of air pollutants, dust and other substances in the environment, and the remaining life of the filter element can only be estimated approximately without considering the above factors and only considering the calculation method of the service life, but the remaining life of the filter element cannot be obtained accurately, so that the air purifier to which the filter element belongs cannot be guaranteed to effectively purify air for users.
If the service life of the filter element is calculated by adopting the conventional calculation method all the time, misleading to a user can be caused due to inaccurate calculated service life of the filter element. On one hand, if the displayed residual life of the filter element is longer than the real residual life of the filter element, the displayed residual life of the filter element approaches to zero, a user is prompted to replace the filter element in time, and at the moment, the real residual life of the filter element is exhausted for a period of time, so that the problem that the filter element carries out secondary pollution on the surrounding environment of the user is possibly caused; on the other hand, if the display residual life of the filter element is less than the real residual life of the filter element, the display residual life of the filter element approaches to zero, a user is prompted to replace the filter element in time, and at the moment, the real residual life of the filter element is not exhausted, so that the problem of waste of the service life of the filter element is possibly caused. It can be seen that accurate calculation of the life of the filter element in an air purifier is important to the air purifier.
Based on this, through the research of the inventor, in order to improve the accuracy of the calculation of the service life of the filter element, the embodiment of the invention provides a method for calculating the service life of the filter element, and the specific implementation scheme may be as follows: firstly, acquiring the current service life value and the current loss coefficient of the filter element, and acquiring the PM2.5 numerical value of the current air; then, calculating a life deduction value according to the current filter element loss coefficient and the current PM2.5 numerical value of the air; and finally, subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
Therefore, the method for calculating the service life of the filter element provided by the embodiment of the invention can be used for calculating the real-time service life deduction value of the filter element by combining the PM2.5 condition of the air filtered by the filter element and the filter element loss degree of the filter element at different stages, thereby accurately calculating the residual service life of the filter element, and overcoming the problems caused by inaccurate calculation of the service life of the filter element, such as the problem of secondary pollution caused by the exhaustion of the service life of the filter element or the problem of waste of the service life of the filter element; and then can indicate the user's service behavior of filter core so that the user can in time change the filter core, realize that the filter screen belongs to air purifier more efficient provides air purification service for the user, has promoted user experience.
In order to provide a technical solution for accurately calculating the service life of a filter element in an air purifier, embodiments of the present invention provide a method and an apparatus for calculating the service life of a filter element, and the embodiments of the present invention are described below with reference to the drawings of the specification. And the embodiments and features of the embodiments may be combined with each other without conflict.
Fig. 1 is a schematic flow chart of a method for calculating a service life of a filter element according to an embodiment of the present invention. Referring to fig. 1, the method may specifically include:
step 101, acquiring a current service life value and a current filter element loss coefficient of a filter element, and acquiring a current PM2.5 numerical value of air.
It is understood that the current life value of the filter element refers to the remaining life of the filter element obtained by subtracting the consumed life value of the filter element from the total life value of the filter element at the current acquired time. For a new filter element leaving a factory, the current life value is the total life value of the filter element, such as: 54000 milligrams (mg), i.e., the filter element can also purify 54000mg of PM 2.5. And as the filter element is used for times or is used for a long time, the obtained current service life value of the filter element is gradually reduced until the purification function of the filter element is completely consumed by 50%, namely the current CADR of the filter element reaches 50%, and at the moment, the current service life value of the filter element is zero.
And the current filter element loss coefficient is used for representing the loss condition of the filter element in unit time under the current condition. The general unit time may take one minute, and the current situation may include: the gear of the air purifier to which the current filter element belongs, and the current dust holding capacity of the filter element.
It can be understood that the current dust holding amount of the filter element refers to the dust holding amount that the filter element can also hold, which is obtained by subtracting the occupied dust holding amount of the filter element from the total dust holding amount of the filter element at the current acquired time. For a new filter element leaving a factory, the current dust holding capacity is the total dust holding capacity of the filter element, such as: 56000 mg. And as the filter element is used for times or duration to gradually increase, the obtained current dust holding capacity of the filter element is gradually reduced until the purification function of the filter element is completely consumed by 50%, and at the moment, the current service life value of the filter element is zero.
In a specific implementation, the step 101 of obtaining a current filter element loss coefficient may specifically refer to a method shown in fig. 2, which includes:
step 201, obtaining a current gear of a purifier to which the filter element belongs, and a current dust holding capacity of the filter element.
Step 202, a preset loss coefficient table is searched, and the loss coefficient corresponding to the current gear and the current dust holding capacity is determined and used as the current filter element loss coefficient.
The preset loss coefficient table can be a data table which is obtained by repeatedly testing by technicians before the filter element leaves a factory, and is configured in advance through statistics and analysis on the loss coefficients of the filter element at different gears and different dust holding amounts. As an example, the preset loss factor table has a form shown in table 1, and the specific form is not limited.
TABLE 1A PRE-DEFINED LOSS COEFFICIENT TABLE
Wherein A is>B>…>C>D；K11<K12<……<K16,K21<K22<……<K26，……，Kn1<Kn2<……<Kn6,K(n+1)1<K(n+1)2<……<K(n+1)6That is, when the current dust holding capacity is constant, the higher the gear is, the larger the corresponding filter element loss coefficient is; k11<K21<……<K61,K12<K22<……<K62，……，K1n<K2n<……<K6n,K1(n+1)<K2(n+1)<……<K6(n+1)That is, when the gear is fixed, the smaller the dust holding amount is, the larger the corresponding filter element loss coefficient is.
In addition, the predetermined loss factor table may also be embodied in the form shown in table 2 below, wherein the dust holding capacity is a ratio, specifically, a percentage of the current dust holding capacity of the filter element to the total dust holding capacity of the filter element. And the total dust holding capacity of the filter element can be the dust holding capacity of the filter element when the filter element leaves a factory and air is not evolved.
TABLE 2A PRE-SETTING LOSS COEFFICIENT TABLE
It should be noted that what kind of preset loss factor table is specifically adopted has no influence on the implementation of the embodiment of the present invention.
During specific implementation, the current gear of the purifier to which the filter element belongs is obtained, and after the current dust containing amount of the filter element is obtained, a preset loss coefficient table can be searched, and the loss coefficient corresponding to the current gear and the current dust containing amount is determined to be used as the current filter element lossAnd (4) the coefficient. As an example, if the preset loss coefficient table is table 1 above, when the current gear is obtained to be gear 3 and the current dust holding capacity of the filter element is C mg, it can be determined that the current filter element loss coefficient is as follows by looking up table 1: kn3。
In addition, in step 101, the PM2.5 value of the current air needs to be collected.
The PM2.5 value of air, also called fine particles, refers to particles with an aerodynamic equivalent diameter less than or equal to 2.5 microns in ambient air, and the chemical components of the particles mainly comprise: organic Carbon (OC), Elemental Carbon (EC), nitrate, sulfate, ammonium salt, sodium salt (Na)+) And the like. Compared with the thicker atmospheric particulate matter, the PM2.5 has small particle size, large area, strong activity, easy attachment of toxic and harmful substances (such as heavy metals, microorganisms and the like), long retention time in the atmosphere and long conveying distance, thereby having great influence on the human health and the quality of the atmospheric environment.
It can be understood that the larger the PM2.5 value of the air, the higher the level, the more serious the air pollution is, the greater the health hazard to human body is, from first-level excellent, second-level excellent, third-level light pollution, fourth-level moderate pollution to fifth-level heavy pollution and sixth-level heavy pollution. Currently, the impact of the PM2.5 value of air on the PM2.5 value of air is finely divided. When the daily mean concentration of PM2.5 reaches 150 micrograms/cubic meter, the PM2.5 value of the air reaches 200; when the daily average concentration of PM2.5 reaches 250 micrograms/cubic meter, the PM2.5 value of the air reaches 300; when the daily average concentration of PM2.5 reaches 500 micrograms/cubic meter, the PM2.5 value of the corresponding air reaches 500.
Gather the PM2.5 numerical value of current air, can realize through the monitoring facilities on the air purifier, this monitoring facilities can real-time supervision air purifier's PM2.5 numerical value within the predetermined range, also can set up according to the user, shows the monitoring result to the user to supply user adaptability's regulation air purifier's gear.
After the step 101 is executed, the current service life value of the filter element, the current filter element loss coefficient and the current PM2.5 value of the air are obtained, and a data basis is provided for the subsequent calculation of the service life of the filter element.
And 102, calculating a life deduction value according to the current filter element loss coefficient and the current PM2.5 numerical value of the air.
In a specific implementation, the manner of calculating the lifetime deduction value according to the current filter element loss coefficient and the current PM2.5 value of the air in step 102 may be: and multiplying the current filter element loss coefficient by the current PM2.5 value of the air, and taking the obtained product as a life deduction value. In addition, the manner of calculating the lifetime deduction value by using the parameters acquired in step 101 includes, but is not limited to, the above implementation manner, as long as the implementation manner can be achieved, and details are not described herein again.
It can be understood that the lifetime deduction value of the filter element is used for reflecting the lifetime value of the consumed filter element in the unit time of the operation of the air purifier to which the filter element belongs. For example, assume that the current filter element loss coefficient obtained in step 101 is K22If the current value of PM2.5 for air is 300, then, according to step 202, the life reduction per minute for that filter element over that period of time is obtained as the current loss factor of the filter element is K22X current PM2.5 value of air 300K22。
And 103, subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
It can be understood that the residual life value of the filter element is used for showing the capacity of the filter element for purifying air after the air purifier to which the air purifier belongs works for a unit time. For example, assuming that the current life value of the filter element obtained in step 101 is 50000mg, the life reduction value per minute of the filter element in a certain period of time is 300K calculated in step 10222In this case, after the air purifier to which the filter element belongs works for 1 minute, the remaining life value of the filter element is equal to (50000-22)mg。
Therefore, according to the method for calculating the service life of the filter element provided by the embodiment of the invention, firstly, the current service life value and the current filter element loss coefficient of the filter element are obtained, and the PM2.5 numerical value of the current air is collected; then, calculating a life deduction value according to the current filter element loss coefficient and the current PM2.5 numerical value of the air; and finally, subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element. Therefore, the real-time life deduction value of the filter element can be calculated by combining the PM2.5 numerical value of the air filtered by the filter element and the filter element loss degree of the filter element at different stages, so that the residual life of the filter element is accurately calculated, and the problems caused by inaccurate calculation of the service life of the filter element, such as the problem of secondary pollution caused by the exhausted service life of the filter element or the problem of waste of the service life of the filter element, are solved; and then can indicate the user's service behavior of filter core so that the user can in time change the filter core, realize that the filter screen belongs to air purifier more efficient provides air purification service for the user, has promoted user experience.
In order to reduce the number of times of calculating and storing the remaining life of the filter element, an embodiment of the present invention further provides a method for calculating the life of the filter element, in which a total filter element life is subtracted every preset period by accumulating the life deduction values in the preset period (e.g.; 30 minutes), and the specific implementation, as shown in fig. 3, may include:
301, acquiring a current service life value and a current filter element loss coefficient of a filter element, and acquiring a current PM2.5 numerical value of air;
step 302, calculating a life deduction value according to the current filter element loss coefficient and the current PM2.5 numerical value of the air;
step 303, accumulating the life deduction values of the filter element in a preset period to obtain a total life deduction value;
and 304, subtracting the total life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
Therein, step 301-Implementation of step 302, and step 101-The step 102 is implemented in a consistent manner, which can be specifically referred to as step 101 above-The description of step 102 is not repeated here.
It can be understood that, in step 303, the preset period may be a time interval for calculating the service life of the filter element, which is set when the filter element or the air purifier leaves a factory, or may also be a time interval for calculating the service life of the filter element, which is set by a user according to the user's will.
In a specific implementation, the lifetime deduction value of a filter element can be obtained by executing steps 301 and 302 in each unit within a preset period. Step 303 may specifically be: and starting timing when a preset period is started, accumulating the obtained life deduction value of each filter element from zero when the timing time does not reach the preset period, and repeating the steps until the timing time reaches the preset period, wherein the obtained total life deduction value can be used as a parameter for calculating the residual life value of the filter element, entering the next preset period, restarting timing and accumulating the total life deduction value from zero again.
For example, assuming that the preset period is 30 minutes, then, starting from the preset period, the step 301 is executed once per minute-Step 302, a lifetime deduction value is obtained. If the first minute gets a lifetime deduction value a1The total life deduction value is recorded as a1(ii) a The second minute obtains a second life deduction value a2The total lifetime deduction value is updated to (a)1+a2) (ii) a By analogy, by 30 minutes, the total lifetime deduction value (a) is obtained1+a2+……+a30)。
At this time, each preset period is executed once in step 304, and the remaining life value obtained in the previous preset period is used as the current life value, and the total life deduction value obtained in the preset period is subtracted, so as to obtain the remaining life value of the filter element after the preset period.
For example, assuming that the current life value of the filter element obtained after the last preset period is finished is X, the total life deduction value (a) obtained by subtracting the preset period is subtracted1+a2+……+a30) Obtaining the residual service life value of the filter element after the preset period, namely X- (a)1+a2+……+a30)。
In addition, along with the attention paid to the concentration of formaldehyde in the space, many air purifiers also have the function of purifying formaldehyde, so in order to improve the calculation accuracy of the service life of the filter element of the air purifier, the embodiment of the invention also provides a method for calculating the service life of the filter element, and referring to fig. 4, the method comprises the following steps:
step 401, acquiring a current service life value and a current filter element loss coefficient of a filter element, and acquiring the current formaldehyde concentration in air;
step 402, calculating a life deduction value according to the current filter element loss coefficient and the current formaldehyde concentration in the air;
and 403, subtracting the life deduction value from the current life value of the filter element to obtain the remaining life value of the filter element.
The specific implementation manner of obtaining the current filter element loss coefficient in step 401 may specifically be: acquiring a current gear of a purifier to which the filter element belongs and a current formaldehyde adsorption amount of carbon in the filter element; and searching a preset loss coefficient table, and determining the loss coefficient corresponding to the current gear and the current formaldehyde adsorption amount as the current filter element loss coefficient.
It can be understood that the method for calculating the service life of the filter element provided by this embodiment can be implemented by referring to the implementation manner of the embodiment shown in fig. 1, and the step 401 is described above-The specific implementation manner and the achieved effect of step 403 may refer to the description of the embodiment corresponding to fig. 1, and are not described herein again.
In addition, in order to make the method for calculating the service life of the filter element provided by the embodiment of the invention more intelligent and improve user experience, the calculation result, namely the residual service life value of the filter element, can be displayed to the user in a display mode so as to inform the user of the service condition of the filter element. Implementations of displaying the remaining life value of the filter element include, but are not limited to: in one case, the display screen of the air purifier to which the filter element belongs can be used for displaying, and a user can know the residual service life of the filter element in a mode of looking at the display screen of the air purifier; in another case, the residual life value of the filter element can be displayed on the terminal equipment connected with the air purifier to which the filter element belongs.
In order to further improve user experience, when the calculated accurate remaining life of the filter element reaches a certain limit, a corresponding prompt is given to a user, and when the remaining life value is small enough, the embodiment of the invention may further include:
and if the residual service life value of the filter element reaches a first threshold value, prompting to replace the filter element.
It can be understood that the first threshold is set by the user or by default when the system leaves the factory, and reminds the minimum remaining life value allowed when the filter element is replaced. When the calculated residual life value of the filter element reaches the first threshold value, the user is prompted to replace the filter element, and at this time, as an example, a display mode such as 'flickering' can be performed on a display screen of the air purifier to which the filter element belongs; as another example, the user can be prompted to replace the filter element by an indicator lamp on the air purifier to which the filter element belongs; as still another example, the user may be prompted to replace the filter element in the form of a pop-up window or the like on the terminal device connected to the air purifier to which the filter element belongs. It should be noted that the notification message may include a remaining life of the filter element and/or a notification message indicating replacement of the filter element.
In order to further improve user experience, when the calculated accurate remaining life of the filter element reaches a certain limit, a corresponding prompt is given to a user, and when the remaining life value is smaller than the first threshold value and is close to or equal to zero, the embodiment of the present invention may further include:
and if the residual service life value of the filter element reaches a second threshold value, alarming and triggering a purifier to which the filter element belongs to be closed.
It is understood that the second threshold is a minimum allowable remaining life value set by a user or by default when the system leaves a factory, and generally, the second threshold is smaller than the first threshold, and the second threshold is zero. When the calculated remaining life value of the filter element reaches the second threshold value, the capacity of the filter element for purifying the air is exhausted, and the purification of any air pollutant can not be carried out any more.
In specific implementation, the specific form of the alarm can be referred to the form of the above prompt for replacing the filter element, and is not described herein again.
And the air purifier to which the filter element belongs is started again automatically or in response to user operation until a new filter element is replaced, so that air purification service is provided for the user.
In addition, an embodiment of the present invention further provides a device for calculating a lifetime of a filter element, and referring to fig. 5, the device for calculating a lifetime of a filter element provided in an embodiment of the present invention is schematically shown in a structural diagram, and the device includes:
a first obtaining module 501, configured to obtain a current life value and a current filter element loss coefficient of a filter element, and collect a current PM2.5 value of air;
a first calculating module 502, configured to calculate a lifetime deduction value according to the current filter element loss coefficient and the current PM2.5 value of the air;
a second calculating module 503, configured to subtract the lifetime deduction value from the current lifetime value of the filter element to obtain a remaining lifetime value of the filter element.
Optionally, the first obtaining module 501 includes:
the first acquisition unit is used for acquiring the current gear of the purifier to which the filter element belongs and the current dust holding capacity of the filter element;
and the first searching unit is used for searching a preset loss coefficient table, determining the loss coefficient corresponding to the current gear and the current dust holding capacity, and taking the loss coefficient as the current filter element loss coefficient.
Optionally, the apparatus further comprises:
the third calculation module is used for accumulating the life deduction value of the filter element in a preset period to obtain a total life deduction value;
the second calculating module 503 is specifically configured to:
and subtracting the total life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
Optionally, the apparatus further comprises:
and the display module is used for displaying the residual service life value of the filter element.
Optionally, the apparatus further comprises:
and the prompting module is used for prompting to replace the filter element if the residual service life value of the filter element reaches a first threshold value.
Optionally, the apparatus further comprises:
and the closing module is used for alarming and triggering the purifier to which the filter element belongs to be closed if the residual service life value of the filter element reaches a second threshold value.
The above description is related to the device for calculating the service life of the filter element, wherein the specific implementation manner and the achieved effect may be described in the embodiment of the method for calculating the service life of the filter element corresponding to fig. 1, and are not described again here.
In addition, an embodiment of the present invention further provides a device for calculating a lifetime of a filter element, and referring to fig. 6, the device is a schematic structural diagram of the device for calculating a lifetime of a filter element, and the device includes:
the second obtaining module 601 is configured to obtain a current life value and a current filter loss coefficient of the filter element, and collect a current formaldehyde concentration in air;
a fourth calculating module 602, configured to calculate a lifetime deduction value according to the current filter element loss coefficient and the current formaldehyde concentration in the air;
a fifth calculating module 603, configured to subtract the lifetime deduction value from the current lifetime value of the filter element to obtain a remaining lifetime value of the filter element.
Optionally, the second obtaining module 601 includes:
the second acquisition unit is used for acquiring the current gear of the purifier to which the filter element belongs and the current formaldehyde adsorption capacity of carbon in the filter element;
and the second searching unit is used for searching a preset loss coefficient table, determining a loss coefficient corresponding to the current gear and the current formaldehyde adsorption amount, and taking the loss coefficient as the current filter element loss coefficient.
The above description is related to the device for calculating the service life of the filter element, wherein the specific implementation manner and the achieved effect may be described in the embodiment of the method for calculating the service life of the filter element corresponding to fig. 4, and are not described again here.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (13)
1. A method of calculating filter element life, comprising:
acquiring a current service life value and a current filter element loss coefficient of a filter element, and acquiring a PM2.5 numerical value of current air;
calculating a life deduction value according to the current filter element loss coefficient and the current PM2.5 value of the air;
and subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
2. The method of claim 1, wherein the obtaining the current filter element loss coefficient comprises:
acquiring the current gear of a purifier to which the filter element belongs and the current dust holding capacity of the filter element;
and searching a preset loss coefficient table, and determining the loss coefficient corresponding to the current gear and the current dust holding capacity as the current filter element loss coefficient.
3. The method of claim 1, further comprising:
accumulating the life deduction values of the filter elements in a preset period to obtain a total life deduction value;
subtracting the life deduction value from the current life value of the filter element to obtain a remaining life value of the filter element, wherein the step of subtracting the life deduction value from the current life value of the filter element comprises the following steps:
and subtracting the total life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
4. The method according to any one of claims 1 to 3, further comprising:
and displaying the residual service life value of the filter element.
5. The method according to any one of claims 1 to 3, further comprising:
and if the residual service life value of the filter element reaches a first threshold value, prompting to replace the filter element.
6. The method according to any one of claims 1 to 3, further comprising:
and if the residual service life value of the filter element reaches a second threshold value, alarming and triggering a purifier to which the filter element belongs to be closed.
7. A method of calculating filter element life, comprising:
acquiring the current service life value and the current loss coefficient of the filter element, and acquiring the current concentration of formaldehyde in the air;
calculating a life deduction value according to the current filter element loss coefficient and the current formaldehyde concentration in the air;
and subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
8. The method of claim 7, wherein the obtaining the current filter element loss coefficient comprises:
acquiring a current gear of a purifier to which the filter element belongs and a current formaldehyde adsorption amount of carbon in the filter element;
and searching a preset loss coefficient table, and determining the loss coefficient corresponding to the current gear and the current formaldehyde adsorption amount as the current filter element loss coefficient.
9. A filter cartridge life calculation device, comprising:
the first acquisition module is used for acquiring the current service life value and the current filter element loss coefficient of the filter element and acquiring the PM2.5 numerical value of the current air;
the first calculation module is used for calculating a life deduction value according to the current filter element loss coefficient and the current PM2.5 numerical value of the air;
and the second calculation module is used for subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
10. The apparatus of claim 9, wherein the first obtaining module comprises:
the first acquisition unit is used for acquiring the current gear of the purifier to which the filter element belongs and the current dust holding capacity of the filter element;
and the first searching unit is used for searching a preset loss coefficient table, determining the loss coefficient corresponding to the current gear and the current dust holding capacity, and taking the loss coefficient as the current filter element loss coefficient.
11. The apparatus of claim 9, further comprising:
the third calculation module is used for accumulating the life deduction value of the filter element in a preset period to obtain a total life deduction value;
the second calculation module is specifically configured to:
and subtracting the total life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
12. A filter cartridge life calculation device, comprising:
the second acquisition module is used for acquiring the current service life value and the current filter element loss coefficient of the filter element and acquiring the current formaldehyde concentration in the air;
the fourth calculation module is used for calculating a life deduction value according to the current filter element loss coefficient and the current formaldehyde concentration in the air;
and the fifth calculation module is used for subtracting the life deduction value from the current life value of the filter element to obtain the residual life value of the filter element.
13. The apparatus of claim 12, wherein the second obtaining module comprises:
the second acquisition unit is used for acquiring the current gear of the purifier to which the filter element belongs and the current formaldehyde adsorption capacity of carbon in the filter element;
and the second searching unit is used for searching a preset loss coefficient table, determining a loss coefficient corresponding to the current gear and the current formaldehyde adsorption amount, and taking the loss coefficient as the current filter element loss coefficient.
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