CN107166662A - A kind of strainer filtering efficient state reminding method and air purifier - Google Patents
A kind of strainer filtering efficient state reminding method and air purifier Download PDFInfo
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- CN107166662A CN107166662A CN201710414122.9A CN201710414122A CN107166662A CN 107166662 A CN107166662 A CN 107166662A CN 201710414122 A CN201710414122 A CN 201710414122A CN 107166662 A CN107166662 A CN 107166662A
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- 238000001914 filtration Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 171
- 231100000719 pollutant Toxicity 0.000 claims abstract description 171
- 238000001514 detection method Methods 0.000 claims description 49
- 239000000356 contaminant Substances 0.000 claims description 2
- 230000000052 comparative effect Effects 0.000 abstract 2
- 238000000746 purification Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 2
- 238000004887 air purification Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000009288 screen filtration Methods 0.000 description 1
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Abstract
The invention discloses a kind of strainer filtering efficient state reminding method, including：Detect air purifier working time section filter screen air intake pollutant concentration and outlet air end pollutant concentration；Obtain the air quantity of air purifier working time section；According to the air intake pollutant concentration, the outlet air end pollutant concentration and the air quantity, the pollutant filtration yield of the filter screen during the working time is calculated；The pollutant filtration yield is compared with predetermined threshold value, comparative result is determined；According to the comparative result, filter screen efficient state prompt message is exported.The invention also discloses a kind of air purifier.
Description
Technical Field
The invention relates to an air purification technology, in particular to a method for prompting the filtering efficiency state of a filter screen and an air purifier.
Background
Air purifier is a device of filtered air, and the pollutant of filtering can be attached to air purifier's filter screen, and along with air purifier live time's increase, air purifier's filtration efficiency just can reduce, so, air purifier's filter screen needs regular washing or change.
Among the prior art, the mode that the washing or change of filter screen reminded generally all adopt accumulative service time reminds, reminds the user to wash or change the filter screen when accumulative service time reaches the setting value, but, the mode that uses accumulative service time reminds washing or change the filter screen can not real reflection filter screen need wash or change, for example: the air purifier has relatively good use environment and relatively low pollutants, under the condition, clear or replacement prompt information can be sent out after the use time of the air purifier reaches the preset time, and in fact, the pollutants attached to the filter screen are few, and the purification efficiency of the filter screen is not really reduced to the degree of needing to be cleaned or replaced; if the environment in which the air purifier is used is abhorrent, a large amount of pollutants are attached to the filter screen. And the service life does not reach the preset value, and the air purifier is continuously used under the condition, so that the air purifier has no air purifying effect, and the secondary pollution of air can be caused.
Disclosure of Invention
In view of this, it is desirable to provide a method for prompting a filtering efficiency state of a filter screen and an air purifier, which can detect a purifying amount of the filter screen of the air purifier in real time, and automatically send a prompt message to a user to prompt the user to clean or replace the filter screen when the purifying amount of the filter screen of the air purifier reaches a preset value.
In order to achieve the above object, an embodiment of the present invention provides a method for prompting a state of a filtering efficiency of a filter screen, where the method includes:
detecting the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen during the working period of the air purifier;
obtaining the air volume of the air purifier in the working time period;
calculating the pollutant filtering amount of the filter screen in the working period according to the pollutant concentration of the air inlet end, the pollutant concentration of the air outlet end and the air volume;
comparing the pollutant filtering amount with a preset threshold value, and determining a comparison result;
and outputting the prompt information of the efficiency state of the filter screen according to the comparison result.
In the above method, the calculating the pollutant filtering amount of the filter screen in the working period according to the pollutant concentration at the air inlet end, the pollutant concentration at the air outlet end and the air volume comprises:
the working time period of the filter screen at least comprises a detection period, and the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen of the air purifier are detected in the detection period to obtain the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period;
the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period are differentiated to obtain a pollutant concentration difference value;
accumulating the obtained pollutant concentration difference values of all detection periods to obtain a pollutant concentration difference value accumulated value;
and multiplying the accumulated value of the pollutant concentration difference value by the air volume to calculate the pollutant filtering amount of the filter screen in the working time period.
In the method, the air volume is obtained according to the air channel length, the air channel diameter and the air speed gear of the air purifier or the fan rotating speed.
In the above method, the comparing the pollutant filtering amount with a preset threshold to determine a comparison result includes:
when the total pollutant filtering amount is smaller than a preset threshold value, determining a comparison result of low filtering efficiency of the filter screen;
and when the total pollutant filtering amount is larger than or equal to a preset threshold value, determining a comparison result that the filtering efficiency of the filter screen is normal.
In the above method, outputting filter screen filtering status prompt information according to the comparison result includes:
when the comparison result is a comparison result that the filtering efficiency of the filter screen is low, outputting prompt information that the filtering state of the filter screen is low;
and when the comparison result is that the filtering efficiency of the filter screen is normal, outputting prompt information that the filtering state of the filter screen is normal.
An embodiment of the present invention provides an air purifier, including:
the pollutant concentration detection module is used for detecting the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen during the working period of the air purifier;
the acquisition module is used for acquiring the air volume of the air purifier in the working time period;
the calculation module is used for calculating the pollutant filtering amount of the filter screen in the working period according to the pollutant concentration of the air inlet end, the pollutant concentration of the air outlet end and the air volume;
the comparison module is used for comparing the pollutant filtering amount with a preset threshold value and determining a comparison result;
and the prompt module is used for outputting prompt information of the efficiency state of the filter screen according to the comparison result.
In the above purifier, the calculation module is specifically configured to:
the working time period of the filter screen at least comprises a detection period, and the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen of the air purifier are detected in the detection period to obtain the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period;
the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period are differentiated to obtain a pollutant concentration difference value;
accumulating the obtained pollutant concentration difference values of all detection periods to obtain a pollutant concentration difference value accumulated value;
and multiplying the accumulated value of the pollutant concentration difference value by the air volume to calculate the pollutant filtering amount of the filter screen in the working time period.
In the purifier, the air quantity is obtained according to the air channel length, the air channel diameter and the air speed gear of the air purifier or the fan rotating speed.
In the above purifier, the comparison module is specifically configured to:
when the total pollutant filtering amount is smaller than a preset threshold value, determining a comparison result of low filtering efficiency of the filter screen;
and when the total pollutant filtering amount is larger than or equal to a preset threshold value, determining a comparison result that the filtering efficiency of the filter screen is normal.
In the above-mentioned clarifier, the suggestion module is specifically used for:
when the comparison result is a comparison result that the filtering efficiency of the filter screen is low, outputting prompt information that the filtering state of the filter screen is low;
and when the comparison result is that the filtering efficiency of the filter screen is normal, outputting prompt information that the filtering state of the filter screen is normal.
The filter screen filtering efficiency state prompting method and the air purifier provided by the embodiment of the invention detect the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen during the working period of the air purifier; obtaining the air volume of the air purifier in the working time period; calculating the pollutant filtering amount of the filter screen in the working period according to the pollutant concentration of the air inlet end, the pollutant concentration of the air outlet end and the air volume; comparing the pollutant filtering amount with a preset threshold value, and determining a comparison result; and outputting the prompt information of the efficiency state of the filter screen according to the comparison result. Therefore, the purifying capacity of the air purifier can be effectively calculated in real time, and after the purifying capacity is accumulated to a preset value, prompt information for cleaning or replacing the filter screen is sent to a user.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for prompting a filtering efficiency status of a filter screen according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an air purifier according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an air purifier in an actual application according to an embodiment of the present invention.
Detailed Description
The invention is further described in detail below with reference to the drawings and the specific embodiments.
Fig. 1 is a schematic flow chart of a method for prompting a filtering efficiency state of a filter screen according to an embodiment of the present invention, and as shown in fig. 1, the flow chart of the method for prompting the filtering efficiency state of the filter screen according to the embodiment of the present invention includes the following steps:
step 101: detecting the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen during the working period of the air purifier; obtaining the air volume of the air purifier in the working time period;
wherein, the filter screen is used as a boundary, the windward direction is used as an air inlet end, and the air outlet direction is used as an air outlet end; the air inlet end and the air outlet end are respectively provided with at least one pollutant concentration detection module, wherein the number of the pollutant concentration detection modules can be set according to actual requirements; the air quantity is obtained according to the air channel length, the air channel diameter and the air speed gear of the air purifier or the fan rotating speed;
the pollutant concentration detection module can be a fine particulate matter (PM2.5) detection sensor, a formaldehyde concentration detection sensor, a Volatile Organic Compound (VOC) detection sensor and the like;
in practical application, the obtained air quantity can be obtained by reading the rotating speed of a fan or the current working gear of the air purifier and then calculating according to the air inlet diameter of the air purifier and the length of the air channel.
Step 102: calculating the pollutant filtering amount of the filter screen in the working period according to the pollutant concentration of the air inlet end, the pollutant concentration of the air outlet end and the air volume;
the working time period of the filter screen at least comprises a detection period, and the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen of the air purifier are detected in the detection period to obtain the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period;
the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period are differentiated to obtain a pollutant concentration difference value;
accumulating the obtained pollutant concentration difference values of all detection periods to obtain a pollutant concentration difference value accumulated value;
multiplying the accumulated value of the pollutant concentration difference value by the air volume to calculate the pollutant filtering amount of the filter screen in the working time period;
further, the pollutant purification amount in one measurement period can be obtained by the formula E ═ V × D, where E represents the pollutant purification amount; v represents the air volume; d represents the accumulated value of the pollutant concentration difference values in each detection period; wherein,
d can pass through ∑(D1-D2)Obtaining D1, wherein D1 represents the pollutant concentration at the air inlet end of a detection period; d2 represents the contaminant concentration at the outlet end of a test cycle.
Step 103: comparing the pollutant filtering amount with a preset threshold value, and determining a comparison result;
when the purification efficiency value is smaller than a preset threshold value, determining a comparison result of low filter efficiency of the filter screen; and when the purification efficiency value is larger than or equal to a preset threshold value, determining a comparison result that the filtering efficiency of the filter screen is normal.
Step 104: and outputting the prompt information of the efficiency state of the filter screen according to the comparison result.
When the comparison result is a comparison result that the filtering efficiency of the filter screen is low, outputting prompt information that the filtering state of the filter screen is low;
and when the comparison result is that the filtering efficiency of the filter screen is normal, outputting prompt information that the filtering state of the filter screen is normal.
In practical application, the prompt message that filter screen filtration efficiency is low can remind the user to wash or change the filter screen through modes such as display panel on the air purifier shows, pilot lamp scintillation, APP news propelling movement.
Fig. 2 is a schematic structural diagram of an air purifier according to an embodiment of the present invention, and as shown in fig. 2, the air purifier according to the embodiment of the present invention includes:
the pollutant concentration detection module 201 is used for detecting the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen during the working period of the air purifier;
the obtaining module 202 is used for obtaining the air volume of the air purifier in the working time period;
the calculation module 203 is configured to calculate a pollutant filtering amount of the filter screen in a working period according to the air inlet end pollutant concentration, the air outlet end pollutant concentration and the air volume;
a comparison module 204, configured to compare the pollutant filtering amount with a preset threshold, and determine a comparison result;
and the prompt module 205 is configured to output a prompt message of the filter screen efficiency state according to the comparison result.
Wherein, the calculating module 20 is specifically configured to:
the working time period of the filter screen at least comprises a detection period, and the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen of the air purifier are detected in the detection period to obtain the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period;
the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period are differentiated to obtain a pollutant concentration difference value;
accumulating the obtained pollutant concentration difference values of all detection periods to obtain a pollutant concentration difference value accumulated value;
and multiplying the accumulated value of the pollutant concentration difference value by the air volume to calculate the pollutant filtering amount of the filter screen in the working time period.
And the air quantity is obtained according to the air channel length, the air channel diameter and the air speed gear of the air purifier or the fan rotating speed.
In the above purifier, the comparison module is specifically configured to:
when the total pollutant filtering amount is smaller than a preset threshold value, determining a comparison result of low filtering efficiency of the filter screen;
and when the total pollutant filtering amount is larger than or equal to a preset threshold value, determining a comparison result that the filtering efficiency of the filter screen is normal.
In the above purifier, the prompt module 205 is specifically configured to:
when the comparison result is a comparison result that the filtering efficiency of the filter screen is low, outputting prompt information that the filtering state of the filter screen is low;
and when the comparison result is that the filtering efficiency of the filter screen is normal, outputting prompt information that the filtering state of the filter screen is normal.
In practical applications, the calculating module 203, the comparing module 204, and the prompting module 205 may be implemented by a Central Processing Unit (CPU) or a Micro Processing Unit (MPU) or a Digital Signal Processor (DSP) or a Field Programmable Gate Array (FPGA) on the air purifier.
It should be noted that, the implementation functions of the modules may be understood by referring to the related description of the prompting method in fig. 1, and are not described herein again.
The method for prompting the filtering efficiency state of the filter screen and the structure of the air purifier in the embodiment of the invention are explained in detail below.
Fig. 3 is a schematic structural diagram of an actual application of the method for prompting the filtering efficiency state of the filter screen according to the embodiment of the present invention, and as shown in fig. 3, the application of the embodiment of the present invention in practice includes:
the device comprises an air inlet end pollutant concentration detection module 301, a filter screen 302, an air outlet end pollutant concentration detection module 303, an acquisition module 304, a calculation module 305, a comparison module 306 and a prompt module 307; wherein,
after the air purifier starts to work, the pollutant concentration detection module 301 and the pollutant concentration detection module 303 at the air inlet end of the air purifier at least detect one or more data in each detection period in the working period, the obtained pollutant concentration data is sent to the calculation module 304, the rotation speed or gear of the fan of the air purifier is obtained by the acquisition module 304, and then the pollutant of the filter screen in each detection period is calculated to filter two pollutantsAnd finally, accumulating the pollutant filtering amount, wherein the pollutant purification amount in one measuring period can be obtained by a formula E-V-D, wherein E represents the pollutant purification amount, V represents the air volume, D represents the accumulated value of the pollutant concentration difference in each detecting period, and D can be ∑(D1-D2)Obtaining D1, wherein D1 represents the pollutant concentration at the air inlet end of a detection period; d2 represents the pollutant concentration of the air outlet end of a detection period; the comparison module 305 sets a threshold, compares the accumulated filtering amount of the pollutants with the set threshold, and if the accumulated filtering amount of the pollutants is greater than the preset threshold, it indicates that the filter screen cannot effectively filter the pollutants, and at this time, the prompt module 306 sends a signal for cleaning or replacing the filter screen; and if the accumulated pollutant filtering amount is smaller than the preset threshold value, continuously calculating the pollutant purification amount of the air purifier until the pollutant purification amount reaches the preset threshold value, and sending a signal for cleaning or replacing the filter screen.
In conclusion, the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen are detected during the working period of the air purifier; obtaining the air volume of the air purifier in the working time period; calculating the pollutant filtering amount of the filter screen in the working period according to the pollutant concentration of the air inlet end, the pollutant concentration of the air outlet end and the air volume; comparing the pollutant filtering amount with a preset threshold value, and determining a comparison result; and outputting the prompt information of the efficiency state of the filter screen according to the comparison result. So, can be in the real-time effectual air purifier's of air purifier operation in-process pollutant purification volume, after pollutant purification volume reaches predetermined threshold value, send the prompt message who washs or change the filter screen.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A method for prompting the efficiency state of a filter screen is characterized by comprising the following steps:
detecting the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen during the working period of the air purifier;
obtaining the air volume of the air purifier in the working time period;
calculating the pollutant filtering amount of the filter screen in the working period according to the pollutant concentration of the air inlet end, the pollutant concentration of the air outlet end and the air volume;
comparing the pollutant filtering amount with a preset threshold value, and determining a comparison result;
and outputting the prompt information of the efficiency state of the filter screen according to the comparison result.
2. The method of claim 1, wherein calculating the pollutant filtering amount of the filter screen during the working period according to the pollutant concentration at the air inlet end, the pollutant concentration at the air outlet end and the air volume comprises:
the working time period of the filter screen at least comprises a detection period, and the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen of the air purifier are detected in the detection period to obtain the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period;
the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period are differentiated to obtain a pollutant concentration difference value;
accumulating the obtained pollutant concentration difference values of all detection periods to obtain a pollutant concentration difference value accumulated value;
and multiplying the accumulated value of the pollutant concentration difference value by the air volume to calculate the pollutant filtering amount of the filter screen in the working time period.
3. The method of claim 1, wherein the air volume is obtained according to an air duct length, an air duct diameter, and a wind speed gear or a fan speed of the air purifier.
4. The method of claim 1, wherein comparing the contaminant filter amount to a preset threshold and determining a comparison comprises:
when the total pollutant filtering amount is smaller than a preset threshold value, determining a comparison result of low filtering efficiency of the filter screen;
and when the total pollutant filtering amount is larger than or equal to a preset threshold value, determining a comparison result that the filtering efficiency of the filter screen is normal.
5. The method according to claim 1 or 4, wherein outputting a filter screen filtering status prompt message according to the comparison result comprises:
when the comparison result is a comparison result that the filtering efficiency of the filter screen is low, outputting prompt information that the filtering state of the filter screen is low;
and when the comparison result is that the filtering efficiency of the filter screen is normal, outputting prompt information that the filtering state of the filter screen is normal.
6. The utility model provides an air purifier, its characterized in that, filter screen change suggestion device includes:
the pollutant concentration detection module is used for detecting the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen during the working period of the air purifier;
the acquisition module is used for acquiring the air volume of the air purifier in the working time period;
the calculation module is used for calculating the pollutant filtering amount of the filter screen in the working period according to the pollutant concentration of the air inlet end, the pollutant concentration of the air outlet end and the air volume;
the comparison module is used for comparing the pollutant filtering amount with a preset threshold value and determining a comparison result;
and the prompt module is used for outputting prompt information of the efficiency state of the filter screen according to the comparison result.
7. The air purifier of claim 6, wherein the computing module is specifically configured to:
the working time period of the filter screen at least comprises a detection period, and the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen of the air purifier are detected in the detection period to obtain the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period;
the pollutant concentration at the air inlet end and the pollutant concentration at the air outlet end of the filter screen in the detection period are differentiated to obtain a pollutant concentration difference value;
accumulating the obtained pollutant concentration difference values of all detection periods to obtain a pollutant concentration difference value accumulated value;
and multiplying the accumulated value of the pollutant concentration difference value by the air volume to calculate the pollutant filtering amount of the filter screen in the working time period.
8. The air purifier as claimed in claim 6 or 7, wherein the air volume is obtained according to the air duct length, the air duct diameter and the wind speed gear or the fan speed of the air purifier.
9. The air purifier of claim 6, wherein the comparison module is specifically configured to:
when the total pollutant filtering amount is smaller than a preset threshold value, determining a comparison result of low filtering efficiency of the filter screen;
and when the total pollutant filtering amount is larger than or equal to a preset threshold value, determining a comparison result that the filtering efficiency of the filter screen is normal.
10. The air purifier of claim 6, wherein the prompt module is specifically configured to:
when the comparison result is a comparison result that the filtering efficiency of the filter screen is low, outputting prompt information that the filtering state of the filter screen is low;
and when the comparison result is that the filtering efficiency of the filter screen is normal, outputting prompt information that the filtering state of the filter screen is normal.
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| CN110195911A (en) * | 2018-02-27 | 2019-09-03 | 上海熙鼎信息科技有限公司 | Judgment method that air purifier and strainer expire determination component and air purifier strainer expires |
| CN108413493A (en) * | 2018-03-08 | 2018-08-17 | 广东美的制冷设备有限公司 | Purification membrane replaces based reminding method, air conditioner, mobile terminal, system and medium |
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| CN109839147A (en) * | 2018-12-20 | 2019-06-04 | 天津大学 | A kind of intelligence food and drink clarifier monitoring system |
| CN110030661A (en) * | 2019-03-21 | 2019-07-19 | 青岛海尔空调器有限总公司 | Screen replacing based reminding method and air purifier |
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| CN110314458A (en) * | 2019-07-11 | 2019-10-11 | 江苏中科睿赛污染控制工程有限公司 | A kind of the screen replacing system for prompting and its method of air cleaning facility |
| CN111482024A (en) * | 2020-06-08 | 2020-08-04 | 深圳市鼎信科技有限公司 | Control method and device for air purification device and storage medium |
| CN113720743A (en) * | 2021-09-01 | 2021-11-30 | 华帝股份有限公司 | Intelligent detection method for oil network state and range hood with detectable oil separation degree |
| CN113932412A (en) * | 2021-10-08 | 2022-01-14 | 青岛海尔空调器有限总公司 | Reminding method and reminding system of air purification equipment and air purification equipment |
| CN114001419A (en) * | 2021-10-25 | 2022-02-01 | 北京小米移动软件有限公司 | Filter screen service life detection method and device, air conditioning equipment and storage medium |
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Application publication date: 20170915 |