CN108421337B - Filter screen service life determining method, air purifier and computer storage medium - Google Patents

Filter screen service life determining method, air purifier and computer storage medium Download PDF

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CN108421337B
CN108421337B CN201810140576.6A CN201810140576A CN108421337B CN 108421337 B CN108421337 B CN 108421337B CN 201810140576 A CN201810140576 A CN 201810140576A CN 108421337 B CN108421337 B CN 108421337B
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air purifier
filter screen
dust holding
wind speed
obtaining
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CN108421337A (en
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翟元义
向延钊
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Midea Group Co Ltd
GD Midea Environment Appliances Manufacturing Co Ltd
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Midea Group Co Ltd
GD Midea Environment Appliances Manufacturing Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42Auxiliary equipment or operation thereof
    • B01D46/44Auxiliary equipment or operation thereof controlling filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0086Filter condition indicators

Abstract

The embodiment of the invention discloses a filter screen service life determining method, an air purifier and a computer storage medium. The method comprises the following steps: detecting and obtaining the pollutant concentration of the environment at intervals of a preset time period, obtaining the wind speed in the air purifier and obtaining the filtering efficiency of a filter screen of the air purifier; determining dust holding capacity based on the pollutant concentration, the wind speed and the filter screen filtering efficiency obtained in the preset time period; adding the dust holding amounts obtained in all the preset time periods to obtain an accumulated dust holding amount; determining a remaining life of a filter screen of the air purifier based on the accumulated dust holding amount.

Description

Filter screen service life determining method, air purifier and computer storage medium
Technical Field
The invention relates to an air purifier, in particular to a filter screen service life determining method, an air purifier and a computer storage medium.
Background
The filter screen of the air purifier needs to be replaced after the service life of the filter screen reaches a certain time limit. The service life of the current filter screens is usually fixed and cannot be changed. When the air purifier is started for use for the first time, the service life of the filter screen begins to be timed, and when the accumulation reaches the set fixed time, the service life of the filter screen is considered to be ended. However, the calculation method of the service life of the filter screen only considers the working time, does not consider other factors influencing the service life of the filter screen, is inaccurate and influences the air purification effect.
Disclosure of Invention
In order to solve the existing technical problems, embodiments of the present invention provide a method for determining a service life of a filter screen, an air purifier, and a computer storage medium.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
the embodiment of the invention provides a method for determining the service life of a filter screen, which is applied to an air purifier; the method comprises the following steps:
detecting and obtaining the pollutant concentration of the environment at intervals of a preset time period, obtaining the wind speed in the air purifier and obtaining the filtering efficiency of a filter screen of the air purifier;
determining dust holding capacity based on the pollutant concentration, the wind speed and the filter screen filtering efficiency obtained in the preset time period;
adding the dust holding amounts obtained in all the preset time periods to obtain an accumulated dust holding amount;
determining a remaining life of a filter screen of the air purifier based on the accumulated dust holding amount.
In the above aspect, determining the dust holding capacity based on the pollutant concentration, the wind speed and the filter screen filtering efficiency obtained in the preset time period includes
And multiplying the pollutant concentration, the wind speed, the filter screen filtering efficiency and the area of the filter screen to obtain the dust holding capacity.
In the above scheme, the obtaining the wind speed in the air purifier includes:
obtaining a rotational speed of a motor of the air purifier, determining a wind speed within the air purifier based on the rotational speed; alternatively, the first and second electrodes may be,
and obtaining the wind speed in the air purifier through a wind speed detection assembly arranged on the air purifier.
In the above-mentioned scheme, obtain air purifier's filter screen filtration efficiency includes:
obtaining the filtering efficiency of the filter screen based on a first accumulated dust holding capacity previously obtained in the current preset time period and a preset function; wherein the filter screen filtering efficiency decreases with an increase in the first accumulated dust holding amount.
In the above-mentioned scheme, the remaining life-span of determining based on the accumulative dust holding capacity the air purifier's filter screen includes:
comparing a preset accumulated dust holding amount threshold value with the accumulated dust holding amount to obtain a first ratio;
determining the remaining life of the filter screen of the air purifier based on the first ratio and a preset life threshold.
The embodiment of the invention also provides an air purifier, wherein the air purifier is provided with a filter screen; the air purifier includes: the device comprises a first acquisition unit, a second acquisition unit, a third acquisition unit, a calculation unit and a determination unit; wherein the content of the first and second substances,
the first acquisition unit is used for detecting and acquiring the pollutant concentration of the environment at intervals of a preset time period and sending the pollutant concentration to the calculation unit;
the second acquisition unit is used for acquiring the wind speed in the air purifier every other preset time period and sending the wind speed to the calculation unit;
the third obtaining unit is used for obtaining the filtering efficiency of the filter screen of the air purifier every other preset time period and sending the filtering efficiency of the filter screen to the calculating unit;
the calculation unit is used for determining the dust holding capacity based on the pollutant concentration, the wind speed and the filter screen filtering efficiency obtained in the preset time period; adding the dust holding amounts obtained in all the preset time periods to obtain an accumulated dust holding amount;
the determining unit is used for determining the residual service life of a filter screen of the air purifier based on the accumulated dust holding capacity determined by the calculating unit.
In the above scheme, the calculation unit is configured to multiply the pollutant concentration, the wind speed, the filter screen filtering efficiency and the area of the filter screen to obtain the dust holding capacity.
In the above scheme, the second obtaining unit is configured to obtain a rotation speed of a motor of the air purifier, and determine a wind speed in the air purifier based on the rotation speed; or acquiring the wind speed in the air purifier collected by a wind speed detection component of the air purifier.
In the above scheme, the third obtaining unit is configured to obtain the filtering efficiency of the filter screen based on a first accumulated dust holding capacity previously obtained in a current preset time period and a preset function; wherein the filter screen filtering efficiency decreases with an increase in the first accumulated dust holding amount.
In the above scheme, the determining unit is configured to compare a preset accumulated dust holding amount threshold with the accumulated dust holding amount to obtain a first ratio; determining the remaining life of the filter screen of the air purifier based on the first ratio and a preset life threshold.
Embodiments of the present invention also provide a computer storage medium having stored thereon computer instructions that, when executed by a processor, perform the steps of the method according to embodiments of the present invention.
An embodiment of the present invention further provides an air purifier, including:
the pollutant detection sensor is used for detecting and obtaining the pollutant concentration of the environment at intervals of a preset time period;
a memory storing a computer program;
a processor executing a computer program stored in the memory, the processor implementing the steps of the method of an embodiment of the invention when executing the program.
The embodiment of the invention provides a filter screen service life determining method, an air purifier and a computer storage medium, wherein the method comprises the following steps: detecting and obtaining the pollutant concentration of the environment at intervals of a preset time period, obtaining the wind speed in the air purifier and obtaining the filtering efficiency of a filter screen of the air purifier; determining dust holding capacity based on the pollutant concentration, the wind speed and the filter screen filtering efficiency obtained in the preset time period; adding the dust holding amounts obtained in all the preset time periods to obtain an accumulated dust holding amount; determining a remaining life of a filter screen of the air purifier based on the accumulated dust holding amount. By adopting the technical scheme of the embodiment of the invention, the residual service life of the filter screen is determined by combining the pollutant concentration and the wind speed which influence the service life of the filter screen and the filter efficiency of the filter screen, so that the obtained residual service life of the filter screen is closer to the actual service life of the filter screen, the accuracy of the service life of the filter screen is greatly improved, and the air purification effect is also greatly improved.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for determining a lifetime of a filter according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of an air purifier according to an embodiment of the present invention
Fig. 3 is a schematic diagram of a hardware component structure of the air purifier according to the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example one
The embodiment of the invention provides a method for determining the service life of a filter screen. FIG. 1 is a schematic flow chart illustrating a method for determining a lifetime of a filter according to an embodiment of the present invention; as shown in fig. 1, the method includes:
step 101: detecting and obtaining the pollutant concentration of the environment, obtaining the wind speed in the air purifier and obtaining the filtering efficiency of the filter screen of the air purifier every other preset time period.
Step 102: and determining the dust holding capacity based on the pollutant concentration, the wind speed and the filter screen filtering efficiency obtained in the preset time period.
Step 103: and adding the dust holding amounts obtained in all the preset time periods to obtain an accumulated dust holding amount.
Step 104: determining a remaining life of a filter screen of the air purifier based on the accumulated dust holding amount.
The technical scheme of the embodiment of the invention is applied to the air purifier, and the components of the air purifier mainly comprise: the wind current that produces by the motor effect passes the filter screen by the air intake and flows to the air outlet, like this, the wind that flows out at the air outlet is exactly the wind that has been purified by the filter screen. Of course, the air cleaner may have more components to achieve more abundant functions, for example, a high performance material and an activated carbon material for adsorbing fine particles and abnormal odor macromolecules may be disposed between the filter screen and the motor, and TiO for removing odor and smoke may be disposed2A layer and an ultraviolet lamp for removing odor and sterilizing, etc.
In the embodiment of the invention, the type of the filter screen of the air purifier is not limited, and the filter screen can be a particulate filter screen or an organic filter screen. Wherein, the particle filter screens are divided into coarse filter screens and fine particle filter screens; the organic filter screens are classified into formaldehyde removal filter screens, deodorization filter screens, activated carbon filter screens, super-light mineralization filter screens and the like. The pollution sources mainly aimed at by each filter screen are different, and the filtering principle is also different.
In the embodiment of the invention, the pollutant concentration of the environment, the wind speed in the air purifier and the filter screen filtering efficiency of the air purifier are obtained by detecting every preset time period. The time periods of obtaining the pollutant concentration of the environment, the wind speed in the air purifier and the filtering efficiency of the filter screen at two adjacent times can be the same or different, and can be preset according to actual conditions. For example, a fixed size time period may be set for data acquisition. For another example, the set time period may be in a trend of shortening along with the service life of the air purifier, and it can be understood that the preset time period is also shortened along with the shortening of the remaining life of the filter screen of the air purifier, which is also convenient for making the remaining life of the filter screen closer to the actual service life.
Wherein, the detection of every preset time interval to obtain the pollutant concentration of the environment comprises the following steps: acquiring the pollutant concentration of the environment by a pollutant detection sensor every other preset time period; pollutant detection sensor can set up in air purifier's air intake department, perhaps also can set up in filter screen towards the air intake direction to obtain the pollutant concentration of air purifier environment.
As an embodiment, the obtaining the wind speed in the air purifier comprises: obtaining a rotational speed of a motor of the air purifier, determining a wind speed within the air purifier based on the rotational speed; or the wind speed in the air purifier is obtained through a wind speed detection component arranged on the air purifier. As an implementation manner, the rotation of the motor drives the air to flow, so as to generate wind, and it can be understood that the rotating speed of the motor has a corresponding relationship with the wind speed; the air purifier stores the corresponding relation between the rotating speed and the wind speed, and after the rotating speed of the motor is obtained, the wind speed can be obtained by inquiring the corresponding relation. As another embodiment, an air purifier may further include an air speed detecting component, such as an anemometer (anemometer), through which the wind speed is obtained.
As another embodiment, the obtaining of the wind speed in the air purifier comprises: and obtaining the wind speed in the air purifier based on a first accumulated dust holding capacity obtained in advance in the current preset time period and a second preset function.
Specifically, in practical applications, along with the increase of the accumulated dust holding capacity of the filter screen, the filter screen increasingly obstructs airflow, the rotation speed of the motor of the air purifier does not have a strict corresponding relationship with the wind speed in the air purifier, the wind speed obtained in the former embodiment corresponding to the rotation speed of the motor is often inaccurate, and the actual wind speed is reduced. In this regard, in the present embodiment, the relationship between the accumulated dust holding amount and the wind speed is expressed by the second preset function, and specifically, the wind speed can be determined by the second preset function. Wherein the wind speed V(NT)Can be expressed as:
V(NT)=fTabV(M(N-1)T) (1)
wherein f isTabV() Representing a second preset function; m(N-1)TRepresents the accumulated dust holding amount obtained in the time period (N-1) before the current preset time period N.
In practical application, the process of determining the wind speed based on the second preset function further requires a standard wind speed, and the standard wind speed can be understood as the wind speed corresponding to the rotating speed of the motor in the previous embodiment; and adjusting the standard wind speed according to the second preset function under the condition of referring to the current accumulated dust holding capacity, thereby obtaining the wind speed.
Wherein, obtain air purifier's filter screen filtration efficiency includes: obtaining the filtering efficiency of the filter screen based on a first accumulated dust holding capacity and a first preset function which are obtained in advance in the current preset time period; wherein the filter screen filtering efficiency decreases with an increase in the first accumulated dust holding amount.
Specifically, in practical applications, the filtering efficiency of the filter screen gradually decreases with the increase of the accumulated dust holding capacity of the filter screen. As another implementation manner, in the embodiment of the present invention, the relationship between the accumulated dust holding amount and the filtering efficiency of the filter screen is represented by a first preset function, and specifically, the filtering efficiency of the filter screen can be calculated and determined by using the current accumulated dust holding amount of the filter screen and the first preset function. Wherein the filter screen has a filter efficiency f(NT)Can be expressed as:
f(NT)=fTabf(M(N-1)T) (2)
wherein f isTabf() Representing a first preset function; m(N-1)TRepresents the accumulated dust holding amount obtained in the time period (N-1) before the current preset time period N.
In an embodiment of the present invention, the determining the dust holding amount based on the pollutant concentration, the wind speed, and the filter screen filtering efficiency obtained in the preset time period includes multiplying the pollutant concentration, the wind speed, the filter screen filtering efficiency, and the area of the filter screen to obtain the dust holding amount. Further, the dust holding amount obtained in each time period is summed, so that the accumulated dust holding amount of the filter screen from the beginning to the current time is obtained. Specifically, the accumulated dust holding amount M(NT)Satisfies the following conditions:
Figure GDA0002981215170000061
wherein, X(NT)Represents a contaminant concentration; v(NT)Expressed as wind speed; f. of(NT)Expressed as the screen filtration efficiency; s represents the area of the filter screen; the area of the filter screen can be configured and stored in advance.
In an embodiment of the present invention, the determining the remaining life of the filter screen of the air purifier based on the accumulated dust holding amount includes: comparing a preset accumulated dust holding amount threshold value with the accumulated dust holding amount to obtain a first ratio; determining the remaining life of the filter screen of the air purifier based on the first ratio and a preset life threshold.
Specifically, in practical application, an accumulated dust holding amount threshold value can be configured in advance, and the accumulated dust holding amount threshold value indicates the maximum dust holding amount which can be borne by the filter screen; accordingly, this maximum dust holding capacity corresponds to the maximum life of the filter screen. Comparing the accumulated dust holding amount calculated in different time periods with the accumulated dust holding amount to obtain a first ratio, which further can be obtained by: maximum life x (1-first ratio), the remaining life of the screen can be determined.
In an embodiment, the method further comprises: outputting first prompt information for indicating the remaining life of the filter screen.
In an embodiment, the method may further include: and when the residual life of the filter screen is smaller than a first threshold value, outputting second prompt information for indicating the replacement of the filter screen.
By adopting the technical scheme of the embodiment of the invention, the residual service life of the filter screen is determined by combining the pollutant concentration, the wind speed and the filter efficiency which influence the service life of the filter screen, so that the obtained residual service life of the filter screen is closer to the actual service life of the filter screen, and the accuracy of the service life of the filter screen is greatly improved. On the other hand, the problem that the filter screen is replaced in advance or delayed due to inaccurate service life calculation of the filter screen is avoided, the former brings certain economic loss to users, and the latter reduces air purification information, so that the air purification effect can be greatly improved in this respect.
Example two
The embodiment of the invention also provides an air purifier, and the air purifier is provided with a filter screen. FIG. 2 is a schematic diagram of the structure of an air purifier according to an embodiment of the present invention; as shown in fig. 2, the air purifier includes: a first acquisition unit 31, a second acquisition unit 32, a third acquisition unit 33, a calculation unit 34, and a determination unit 35; wherein the content of the first and second substances,
the first obtaining unit 31 is configured to detect and obtain the pollutant concentration of the environment every preset time period, and send the pollutant concentration to the calculating unit 34;
the second obtaining unit 32 is configured to obtain the wind speed in the air purifier every preset time period, and send the wind speed to the calculating unit 34;
the third obtaining unit 33 is configured to obtain filter screen filtering efficiency of the air purifier every preset time period, and send the filter screen filtering efficiency to the calculating unit 34;
the calculation unit 34 is configured to determine a dust holding capacity based on the pollutant concentration, the wind speed, and the filter screen filtering efficiency obtained in the preset time period; adding the dust holding amounts obtained in all the preset time periods to obtain an accumulated dust holding amount;
the determining unit 35 is configured to determine a remaining life of a filter screen of the air purifier based on the accumulated dust holding amount determined by the calculating unit 34.
In an embodiment, the calculating unit 34 is configured to multiply the pollutant concentration, the wind speed, the filter efficiency of the filter screen, and the area of the filter screen to obtain the dust holding capacity.
In an embodiment, the second obtaining unit 32 is configured to obtain a rotation speed of a motor of the air purifier, and determine a wind speed in the air purifier based on the rotation speed; or acquiring the wind speed in the air purifier collected by a wind speed detection component of the air purifier.
In an embodiment, the third obtaining unit 33 is configured to obtain the filtering efficiency of the filter screen based on a first accumulated dust holding capacity previously obtained in a current preset time period and a preset function; wherein the filter screen filtering efficiency decreases with an increase in the first accumulated dust holding amount.
In an embodiment, the determining unit 35 is configured to compare a preset accumulated dust holding amount threshold with the accumulated dust holding amount to obtain a first ratio; determining the remaining life of the filter screen of the air purifier based on the first ratio and a preset life threshold.
In the embodiment of the present invention, the first obtaining Unit 31, the second obtaining Unit 32, the third obtaining Unit 33, the calculating Unit 34, and the determining Unit 35 in the air purifier may be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a Micro Control Unit (MCU), or a Programmable Gate Array (FPGA) in the terminal in practical application.
It should be noted that: in the air purifier provided in the above embodiment, when determining the service life of the filter screen, only the division of the program modules is taken as an example, and in practical applications, the processing distribution may be completed by different program modules according to needs, that is, the internal structure of the air purifier is divided into different program modules to complete all or part of the processing described above. In addition, the embodiments of the air purifier and the filter screen life determining method provided by the embodiments belong to the same concept, and specific implementation processes are detailed in the embodiments of the methods and are not described herein again.
EXAMPLE III
An embodiment of the present invention further provides an air purifier, fig. 3 is a schematic diagram of a hardware composition structure of the air purifier according to the embodiment of the present invention, and as shown in fig. 3, the air purifier includes: a contaminant detection sensor 43 for detecting and obtaining the contaminant concentration of the environment at every predetermined time period; a memory 42 in which a computer program is stored; a processor 41 executing a computer program stored in the memory 42, the processor 41 implementing when executing the program: detecting and obtaining the pollutant concentration of the environment at intervals of a preset time period, obtaining the wind speed in the air purifier and obtaining the filtering efficiency of a filter screen of the air purifier; determining dust holding capacity based on the pollutant concentration, the wind speed and the filter screen filtering efficiency obtained in the preset time period; adding the dust holding amounts obtained in all the preset time periods to obtain an accumulated dust holding amount; determining a remaining life of a filter screen of the air purifier based on the accumulated dust holding amount.
In one embodiment, the processor 41, when executing the program, implements: and multiplying the pollutant concentration, the wind speed, the filter screen filtering efficiency and the area of the filter screen to obtain the dust holding capacity.
In one embodiment, the processor 41, when executing the program, implements: obtaining a rotational speed of a motor of the air purifier, determining a wind speed within the air purifier based on the rotational speed; or the wind speed in the air purifier is obtained through a wind speed detection component arranged on the air purifier. It will be appreciated that a wind speed sensor 44 may also be included in the air purifier to detect wind speed.
In one embodiment, the processor 41, when executing the program, implements: obtaining the filtering efficiency of the filter screen based on a first accumulated dust holding capacity previously obtained in the current preset time period and a preset function; wherein the filter screen filtering efficiency decreases with an increase in the first accumulated dust holding amount.
In one embodiment, the processor 41, when executing the program, implements: comparing a preset accumulated dust holding amount threshold value with the accumulated dust holding amount to obtain a first ratio; determining the remaining life of the filter screen of the air purifier based on the first ratio and a preset life threshold.
It will be appreciated that the various components within the air purifier are coupled together by a bus system 45. It will be appreciated that the bus system 45 is used to enable communications among the components. The bus system 45 includes a power bus, a control bus, and a status signal bus in addition to the data bus. For clarity of illustration, however, the various buses are labeled as bus system 45 in fig. 3.
It will be appreciated that the memory 42 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 42 described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
The method disclosed in the above embodiments of the present invention may be applied to the processor 41, or implemented by the processor 41. The processor 41 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 41. The processor 41 described above may be a general purpose processor, a DSP, or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. Processor 41 may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed by the embodiment of the invention can be directly implemented by a hardware decoding processor, or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in memory 42, where processor 41 reads the information in memory 42 and in combination with its hardware performs the steps of the method described above.
Example four
In an exemplary embodiment, embodiments of the present invention also provide a computer storage medium, such as the memory 42, comprising a computer program executable by the processor 41 of the air purifier to perform the steps of the aforementioned method. The computer storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM, among others.
The computer storage medium provided by the embodiment of the invention is stored with computer instructions, and the instructions are executed by a processor to realize that: detecting and obtaining the pollutant concentration of the environment at intervals of a preset time period, obtaining the wind speed in the air purifier and obtaining the filtering efficiency of a filter screen of the air purifier; determining dust holding capacity based on the pollutant concentration, the wind speed and the filter screen filtering efficiency obtained in the preset time period; adding the dust holding amounts obtained in all the preset time periods to obtain an accumulated dust holding amount; determining a remaining life of a filter screen of the air purifier based on the accumulated dust holding amount.
In one embodiment, the instructions when executed by the processor implement: and multiplying the pollutant concentration, the wind speed, the filter screen filtering efficiency and the area of the filter screen to obtain the dust holding capacity.
In one embodiment, the instructions when executed by the processor implement: obtaining a rotational speed of a motor of the air purifier, determining a wind speed within the air purifier based on the rotational speed; or the wind speed in the air purifier is obtained through a wind speed detection component arranged on the air purifier.
In one embodiment, the instructions when executed by the processor implement: obtaining the filtering efficiency of the filter screen based on a first accumulated dust holding capacity previously obtained in the current preset time period and a preset function; wherein the filter screen filtering efficiency decreases with an increase in the first accumulated dust holding amount.
In one embodiment, the instructions when executed by the processor implement: comparing a preset accumulated dust holding amount threshold value with the accumulated dust holding amount to obtain a first ratio; determining the remaining life of the filter screen of the air purifier based on the first ratio and a preset life threshold.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (10)

1. A method for determining the service life of a filter screen is applied to an air purifier; characterized in that the method comprises:
detecting and obtaining the pollutant concentration of the environment at intervals of a preset time period, obtaining the wind speed in the air purifier and obtaining the filtering efficiency of a filter screen of the air purifier;
determining dust holding capacity based on the pollutant concentration, the wind speed and the filter screen filtering efficiency obtained in the preset time period;
adding the dust holding amounts obtained in all the preset time periods to obtain an accumulated dust holding amount;
determining a remaining life of a filter screen of the air purifier based on the accumulated dust holding amount;
determining the remaining life of a filter screen of the air purifier based on the accumulated dust holding amount, including:
comparing a preset accumulated dust holding amount threshold value with the accumulated dust holding amount to obtain a first ratio;
determining the remaining life of a filter screen of the air purifier based on the first ratio and a preset life threshold;
and the preset time period is dynamically adjusted according to the residual life of the filter screen of the air purifier.
2. The method of claim 1, wherein the determining a dust holding capacity based on the pollutant concentration, the wind speed, and the screen filtering efficiency obtained for the preset time period comprises
And multiplying the pollutant concentration, the wind speed, the filter screen filtering efficiency and the area of the filter screen to obtain the dust holding capacity.
3. The method of claim 1, wherein the obtaining the wind speed within the air purifier comprises:
obtaining a rotational speed of a motor of the air purifier, determining a wind speed within the air purifier based on the rotational speed; alternatively, the first and second electrodes may be,
and obtaining the wind speed in the air purifier through a wind speed detection assembly arranged on the air purifier.
4. The method of claim 1, wherein said obtaining a screen filtration efficiency of the air purifier comprises:
obtaining the filtering efficiency of the filter screen based on a first accumulated dust holding capacity previously obtained in the current preset time period and a preset function; wherein the filter screen filtering efficiency decreases with an increase in the first accumulated dust holding amount.
5. An air purifier is provided with a filter screen; characterized in that, air purifier includes: the device comprises a first acquisition unit, a second acquisition unit, a third acquisition unit, a calculation unit and a determination unit; wherein the content of the first and second substances,
the first acquisition unit is used for detecting and acquiring the pollutant concentration of the environment at intervals of a preset time period and sending the pollutant concentration to the calculation unit;
the second acquisition unit is used for acquiring the wind speed in the air purifier every other preset time period and sending the wind speed to the calculation unit;
the third obtaining unit is used for obtaining the filtering efficiency of the filter screen of the air purifier every other preset time period and sending the filtering efficiency of the filter screen to the calculating unit;
the calculation unit is used for determining the dust holding capacity based on the pollutant concentration, the wind speed and the filter screen filtering efficiency obtained in the preset time period; adding the dust holding amounts obtained in all the preset time periods to obtain an accumulated dust holding amount; wherein the preset time period is dynamically adjusted according to the residual service life of a filter screen of the air purifier;
the determining unit is used for determining the residual service life of a filter screen of the air purifier based on the accumulated dust holding amount determined by the calculating unit;
the determining unit is used for comparing a preset accumulated dust holding amount threshold with the accumulated dust holding amount to obtain a first ratio; determining the remaining life of the filter screen of the air purifier based on the first ratio and a preset life threshold.
6. The air purifier of claim 5, wherein the computing unit is configured to multiply the pollutant concentration, the wind speed, the filter screen filtering efficiency, and an area of the filter screen to obtain the dust holding capacity.
7. The air purifier of claim 5, wherein the second obtaining unit is configured to obtain a rotational speed of a motor of the air purifier, and determine a wind speed within the air purifier based on the rotational speed; or acquiring the wind speed in the air purifier collected by a wind speed detection component of the air purifier.
8. The air purifier of claim 5, wherein the third obtaining unit is configured to obtain the filtering efficiency of the filter screen based on a first accumulated dust holding amount previously obtained at a current preset time period and a preset function; wherein the filter screen filtering efficiency decreases with an increase in the first accumulated dust holding amount.
9. A computer storage medium having computer instructions stored thereon, wherein the instructions, when executed by a processor, perform the steps of the method of any one of claims 1 to 4.
10. An air purifier, characterized in that the air purifier comprises:
the pollutant detection sensor is used for detecting and obtaining the pollutant concentration of the environment at intervals of a preset time period;
a memory storing a computer program;
a processor executing a computer program stored in the memory, the processor implementing the steps of the method of any one of claims 1 to 4 when executing the program.
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