CN106440205A - Control method and device for air purifier - Google Patents
Control method and device for air purifier Download PDFInfo
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- CN106440205A CN106440205A CN201610859904.9A CN201610859904A CN106440205A CN 106440205 A CN106440205 A CN 106440205A CN 201610859904 A CN201610859904 A CN 201610859904A CN 106440205 A CN106440205 A CN 106440205A
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- air purifier
- particulate matter
- concentration
- value
- adsorbent equipment
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/64—Airborne particle content
Abstract
The invention discloses a control method and device for an air purifier. The air purifier comprises a particle adsorption device and a particle sensor. The method comprises the steps of detecting the concentration of particles in the air purifier through the particle sensor during the operation process of the air purifier; when the concentration of particles reaches first set concentration, acquiring the time that the concentration of particles in the air purifier takes to decrease from the first set concentration to second set concentration; and when the time value is larger than a preset threshold value, sending warning information of the particle adsorption device. According to the control method, the state of the particle adsorption device is automatically monitored, a more accurate prompt for changing or cleaning the particle adsorption device is provided, and the particle adsorption device is changed or cleaned more accurately and reasonably.
Description
Technical field
The present invention relates to technical field of air purification processing, more particularly to air purifier control method and device.
Background technology
Conventional air purifier, user is not know when that replacing drainage screen is good, or it is net to have forgotten scavenging air
Change the electrostatic adsorption device inside device.Many times, drainage screen is very dirty, and air purifier does not possess in purify air substantially
The function of grain thing, still forgets to change drainage screen；Or, as room air itself is very excellent, air purifier does not also have
Have and the standard for needing to change is reached, user has prematurely changed drainage screen, cause customer using cost to rise, while also result in
The waste of resource.
To sum up, current filter screen of air purifier be replaced by according to user intention change so that filter screen replacement when
Machine poor accuracy.
The above is only used for auxiliary and understands technical scheme, does not represent and recognizes that the above is existing skill
Art.
Content of the invention
Present invention is primarily targeted at providing a kind of air purifier control method and device, it is intended to solve current air
Being replaced by for depurator drainage screen is changed according to user intention so that the problem of the opportunity poor accuracy of filter screen replacement.
For achieving the above object, a kind of air purifier control method that the present invention is provided, the air purifier includes
Grain thing adsorbent equipment and particulate matter sensors, methods described includes step：
The concentration of air purifier endoparticle thing in air purifier running, is detected by particulate matter sensors；
When the concentration of the particulate matter reaches the first setting concentration, the concentration of air purifier endoparticle thing is obtained from institute
State the duration that the first setting concentration is reduced to needed for the second setting concentration；
When the value of the duration is more than predetermined threshold value, the warning information of particulate matter adsorbent equipment is sent.
Preferably, the warning information for sending particulate matter adsorbent equipment includes：
Calculate the value of the duration and the difference of predetermined threshold value；
Determine the grade of warning information according to the difference, and send with determined by the corresponding warning information of grade.
Preferably, the predetermined threshold value is negatively correlated with the wind shelves of air purifier.
Preferably, methods described also includes：
After the concentration of the particulate matter reaches the first setting concentration, the particulate matter for detecting by particulate matter sensors is judged
Whether concentration raises；
When particle concentration is raised, terminate flow process.
Preferably, methods described also includes：
In air purifier running, indoor light intensity level is obtained；
When the indoor light intensity level is more than light intensity threshold value is preset, control air purifier is transported with day mode
OK；
When the indoor light intensity level is less than light intensity threshold value is preset, control air purifier is transported with night mode
OK, the warning information of particulate matter adsorbent equipment is not sent.
Additionally, for achieving the above object, the present invention also provides a kind of air purifier controlling device, including：
Detection module, for, in air purifier running, being detected in air purifier by particulate matter sensors
The concentration of particulate matter；
Acquisition module, for when the concentration of the particulate matter reaches the first setting concentration, obtaining interior of air purifier
The concentration of grain thing is reduced to the duration needed for the second setting concentration from the described first setting concentration；
Reminding module, for when default alarm conditions are met, sending the warning information of particulate matter adsorbent equipment.
Preferably, the reminding module includes：
Computing unit, for calculating the value of the duration and the difference of predetermined threshold value；
Determining unit, for determining the grade of warning information according to the difference；
Tip element, for send with determined by the corresponding warning information of grade.
Preferably, the predetermined threshold value is negatively correlated with the wind shelves of air purifier.
Preferably, described device also includes：
Judge module, for after the concentration of the particulate matter reaches the first setting concentration；
Control module, for when particle concentration is raised, terminating flow process.
Preferably, the acquisition module, is additionally operable in air purifier running, obtains indoor light intensity level；
The control module, is additionally operable to when the indoor light intensity level is more than light intensity threshold value is preset, and control is empty
Gas purifier is run with day mode；Control module is additionally operable to
When the indoor light intensity level is less than light intensity threshold value is preset, control air purifier is transported with night mode
OK, reminding module does not send the warning information of particulate matter adsorbent equipment.
The present invention passes through, during air purifier purify air, to detect in air purifier by particulate matter sensors
Particle concentration, and obtain particle concentration from first setting concentration be reduced to duration needed for the second setting concentration, described
When the value of duration is more than predetermined threshold value, the warning information of particulate matter adsorbent equipment is sent.The duration is longer to illustrate particulate matter suction
The absorbability of adsorption device is poorer, and poorer to the clean-up effect of air, therefore needs more than predetermined threshold value in the value of the duration
Change or clean particulate matter adsorbent equipment.Realize being monitored the state of particulate matter adsorbent equipment automatically, provide more
Accurately change or cleaning particulate matter adsorbent equipment prompting so that accurately reasonably particulate matter adsorbent equipment is changed or
Cleaning operation.
Description of the drawings
Fig. 1 is the schematic flow sheet of the first embodiment of air purifier control method of the present invention；
Fig. 2 is the configuration diagram of air purifier in one embodiment of the invention；
Fig. 3 is the schematic flow sheet of the second embodiment of air purifier control method of the present invention；；
Fig. 4 is the schematic flow sheet for sending warning information in one embodiment of the invention；
Fig. 5 is the schematic flow sheet of the 3rd embodiment of air purifier control method of the present invention；
Fig. 6 is the high-level schematic functional block diagram of the first embodiment of air purifier controlling device of the present invention；
Fig. 7 is the high-level schematic functional block diagram of the second embodiment of air purifier controlling device of the present invention；
Fig. 8 is the refinement high-level schematic functional block diagram of one embodiment of judge module in Fig. 6；.
The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made all its
His embodiment, belongs to the scope of protection of the invention.
Schematic flow sheet with reference to the first embodiment that Fig. 1, Fig. 1 are air purifier control method of the present invention.
In one embodiment, the air purifier control method includes：
Step S10, in air purifier running, detects air purifier endoparticle thing by particulate matter sensors
Concentration；
In the present embodiment, with reference to Fig. 2, the air purifier 100 includes blower fan 101, the absorption of controller 102, particulate matter
Device 103, particulate matter sensors 104.When air purifier 100 runs, blower fan 101 is drawn air into different rotation speed operation
Inside air purifier 100, particulate matter sensors 104 detect the particle concentration value inside suction air purifier 100, granule
Particulate matter in 103 adsorption gas flow of thing adsorbent equipment.In 100 running of air purifier, examined by particulate matter sensors 104
The concentration of air purifier endoparticle thing is surveyed, and judges whether the particle concentration for detecting reaches the first setting concentration.Described
First sets concentration is arranged according to the performance of air purifier 100, and after air purifier is opened, particulate matter sensors 104 are every
Separated in time (1s or 2s etc. according to user's request arrange or according to ambient conditions arrange) detection air purifier in
The concentration of grain thing.When particle concentration and first set the difference of concentration less than preset value (1% or 0.5% etc.), inspection is judged
The particle concentration for measuring reaches the first setting concentration.
Step S20, when the concentration of the particulate matter reaches the first setting concentration, obtains air purifier endoparticle thing
Concentration is reduced to the duration needed for the second setting concentration from the described first setting concentration；
Described second sets concentration is arranged according to the performance of air purifier 100, and the value of the second setting concentration is less than
First value for setting concentration, in general first sets the twice of the value more than the value of the second setting concentration of concentration.Net in air
When particle concentration value in change device 100 reaches the first setting value, start timing, continue detection air purifier endoparticle thing
Concentration, when the concentration of particulate matter reaches the second setting concentration, stops timing, gets the concentration of air purifier endoparticle thing
The duration needed for the second setting concentration is reduced to from the described first setting concentration, the duration and preset duration is compared, is judged
Whether the value of the duration is more than predetermined threshold value.The predetermined threshold value TS value is for being the pure air according to air purifier 100
Amount, rotation speed of fan, 103 adsorption efficiency of particulate matter adsorbent equipment, the relation of the relevant parameter such as particle concentration value A1 and A2, in advance
It is arranged in controller 102, is not be set by the user, predetermined threshold value TS is negatively correlated with the wind shelves of blower fan 101.Example
Such as, predetermined threshold value TS is the initial Clean air delivery rate size that can provide with air purifier 100, the high low phase of 101 rotating speed of blower fan
The preset value of pass, during different rotation speed of fan, with different TS setting values.Such as, the high wind of the blower fan 101 of air purifier 100
During shelves operation, its corresponding Clean air delivery rate is 300 cubes ms/h, and it is 1000 seconds to arrange the corresponding TS1 value of high wind shelves；In
During the operation of wind shelves, the Clean air delivery rate of air purifier 100 is 200 cubes ms/h, arranges the corresponding TS2 value of apoplexy shelves and is
1500 seconds；During low wind shelves operation, the Clean air delivery rate of air purifier 100 is 100 cubes ms/h, arranges low wind shelves and corresponds to
TS3 value be 3000 seconds.(note：When representing that high wind speed, middle wind speed, low wind speed are corresponding default with TS1, TS2, TS3 correspondence herein
Between value TS).The wind shelves being presently according to blower fan 101 determining predetermined threshold value TS, then by the value of the duration and predetermined threshold value
Whether TS is compared, judge the value of the duration more than predetermined threshold value TS.
Step S30, when the value of the duration is more than predetermined threshold value, sends the warning information of particulate matter adsorbent equipment.
When default alarm conditions are met, the warning information of particulate matter adsorbent equipment is sent, the warning information is for changing
Or prompting or the alarm of cleaning particulate matter adsorbent equipment 103.The prompting or alarm include but is not limited to auditory tone cueses or lamp
Light is pointed out, for example, audio alert, double flashing lights or display lamp are lighted.When detect user cleaning or changed particulate matter suction
After adsorption device 103, next circulation is entered, particulate matter sensors 104 detect air purifier again through particulate matter sensors
The concentration of endoparticle thing；When the concentration of the particulate matter reaches the first setting concentration, air purifier endoparticle thing is obtained
Concentration is reduced to the duration needed for the second setting concentration from the described first setting concentration；It is more than predetermined threshold value in the value of the duration
When, send the warning information of particulate matter adsorbent equipment.Usually, when taking TS value for 100 original state of air purifier, particulate matter
Concentration value is reduced to 2 times of A2 (second sets concentration) spent time from A1 (the first setting concentration), represents air purifier 100
After application a period of time, after particulate matter adsorbent equipment 103 has adsorbed certain dust granules thing, its corresponding Clean air delivery rate declines
Reduce to original state half when, air purifier 100 again by particle concentration from A1 be reduced to A2 when, required consuming when
Between value rise to 2 times of original state, it is TS value to arrange this time value.Preferably, the first concentration value of particulate matter A1 is set as
PM2.5 content is 150 micrograms/cubic meter；Second concentration value A2 is set as PM2.5 content for 75 micrograms/cubic meter.Such as, originally
A air purifier 100 of invention, during the operation of high wind speed shelves, it is 300 that pollutant are initial Clean air delivery rate during particulate matter
Cube m/h, during original state, when particle concentration value is reduced to A2 value concentration from A1 value the time required to be 500 seconds, then
It is 1000 seconds to arrange TS.Such as, user certain using the air purifier 100 when, controller 102 detect particle concentration from
A1 (150 micrograms/cubic meter) be reduced to time spent by 75 micrograms/cubic meter when being 1100 seconds (more than the TS value for setting,
1000 seconds), then provide the prompting for changing particulate matter adsorbent equipment 103.It is of course also possible to a relatively low TS value is set,
Then, when judging 1000 particulate matter of air purifier, whether the time for being spent from the default density A1 to A2 is TS value
Several times relation etc. judging whether to change particulate matter adsorbent equipment 103.
The present embodiment passes through, during air purifier purify air, to detect air purifier by particulate matter sensors
Interior particle concentration, and obtain particle concentration from first setting concentration be reduced to duration needed for the second setting concentration, in institute
When the value of duration is stated more than predetermined threshold value, send the warning information of particulate matter adsorbent equipment.The longer explanation particulate matter of the duration
The absorbability of adsorbent equipment is poorer, and poorer to the clean-up effect of air, is therefore more than predetermined threshold value in the value of the duration
Need to change or cleaning particulate matter adsorbent equipment.Realize being monitored the state of particulate matter adsorbent equipment automatically, provide more
Plus accurately replacing or the prompting of cleaning particulate matter adsorbent equipment so that accurately reasonably particulate matter adsorbent equipment is changed
Or cleaning operation.
Schematic flow sheet with reference to the second embodiment that Fig. 3, Fig. 3 are air purifier control method of the present invention.Based on upper
The first embodiment of method is stated, methods described also includes：
Step S40, after the concentration of the particulate matter reaches the first setting concentration, judges to detect by particulate matter sensors
Particle concentration whether raise；
Step S50, when particle concentration is raised, terminates flow process.
After the concentration of the particulate matter reaches the first setting concentration, particulate matter sensors 104 persistently detect air cleaning
Particle concentration in device 100, and analyze whether particle concentration persistently reduces, if it is elevated existing to there is particulate matter during this
As then exiting this detection that changes or clean particulate matter adsorbent equipment 103, terminating flow process.Because, if in air purifier
100 run durations, after the concentration of the particulate matter reaches the first setting concentration, have the elevated phenomenon of particle concentration, represent
Now there is external particle thing source that (such as, this period someone smoking, cause particle concentration to raise suddenly) is added, then this time test
Particulate matter reduce speed forbidden, it may appear that error, be not made whether to change or clean the detection of particulate matter adsorbent equipment 103,
Avoid the error for detecting.
In a preferred embodiment of the present invention, with reference to Fig. 4, step S30 includes：
Step S31, calculates the value of the duration and the difference of predetermined threshold value；
Step S32, determines the grade of warning information according to the difference, and send with determined by the corresponding alarm of grade
Information.When the duration is more than predetermined threshold value, the value of the duration and the difference of predetermined threshold value is calculated；True according to the difference
Determine the grade of warning information, and send with determined by the corresponding warning information of grade.It is more than a reference difference in the difference
During one grade of value, change or the prompting of cleaning particulate matter adsorbent equipment 103 strengthens one-level, until it reaches during highest ranking, carry
Show that air purifier 100 will quit work or lose the effect to air cleaning.For example, the granule that controller 102 is detected
Thing concentration value A is reduced to the duration spacing value TJ of the second concentration value A2 from the first concentration value A1, often more than the duration value TS for setting
During one grade point C level amplitude, change or the prompting of cleaning particulate matter adsorbent equipment 103 strengthens one-level, until it reaches highest is carried
Show grade.Such as, it is 10% to arrange C, represents that particle concentration is reduced to, from A1, the time spent by A2 and often increases than setting value TS
Plus during C level amplitude (10%), change or the prompting of cleaning particulate matter adsorbent equipment 103 strengthens one-level.Such as, air cleaning
When the high wind shelves of device 100 run, the TS value of setting is 1000 seconds, reduces from A1 when air purifier 100 detects particle concentration
The time for being spent to A2 more than 1000 seconds less than 1100 seconds when, provide the prompting for changing particulate matter adsorbent equipment 103, change
The display lamp of grain thing adsorbent equipment 103 is green；Spent when air purifier 100 detects particle concentration and is reduced to A2 from A1
When the time that takes was less than 1200 seconds more than 1100 seconds, the prompting for changing particulate matter adsorbent equipment 103 increases one-level, such as, changes
The display lamp of particulate matter adsorbent equipment 103 is yellow green by green conversion；When air purifier 100 detect particle concentration from
A1 be reduced to time that A2 spent more than 1200 seconds less than 1300 seconds when, the prompting for changing particulate matter adsorbent equipment 103 increases
Two grades, such as, the display lamp for changing particulate matter adsorbent equipment is converted to yellow by yellow green；When air purifier 100 is detected
Particle concentration from A1 be reduced to time that A2 spent more than 1300 seconds when, the prompting for changing particulate matter adsorbent equipment 300 reaches
To the superlative degree, such as, the display lamp for changing particulate matter adsorbent equipment is converted to redness by yellow.Represent particulate matter adsorbent equipment
The particulate matter for adsorbing on 103 is very many, in the urgent need to changing immediately or cleaning particulate matter adsorbent equipment 103, otherwise, can shadow
Ring the clean-up effect to particulate matter of air purifier 100.
In an embodiment of the present invention, judge that the prompting is changed or whether the grade of cleaning reaches highest alarm grade；
When highest alarm grade is reached, control air purifier is out of service.By controlling air purifier out of service, it is ensured that
Air purifier closes save energy after failure state.Preferably, in control air purifier, (5 points of Preset Time is run
Clock or 10 minutes), turn off air purifier.
Schematic flow sheet with reference to the 3rd embodiment that Fig. 5, Fig. 5 are air purifier control method of the present invention.Based on upper
The first embodiment of method is stated, methods described also includes：
Step S60, in air purifier running, obtains indoor light intensity level；
Step S70, when the indoor light intensity level is more than light intensity threshold value is preset, control air purifier is with white
Day mode runs；
Step S80, when the indoor light intensity level is less than light intensity threshold value is preset, control air purifier is with night
Late mode operation, does not send the warning information of particulate matter adsorbent equipment.Air purifier 100 also includes optical sensor, Neng Goujian
That surveys indoor light robs meat, judge current be whether dark night mode, when for night mode, do not provide replacing or clearly
Sound or the light prompt of particulate matter adsorbent equipment 103 is washed, is rested with interruption-free user.Further, preferable in the present invention one
In embodiment, the light of the indoor environment that light sensors are arrived is weaker, it should enter Night operation.But in order to improve sky
Gas detergent power, more quickly provides comfortable indoor environment.In the indoor light intensity level less than default light intensity
During threshold value, the ambient sound value produced by indoor environment is obtained.When the ambient sound value is less than preset sound threshold value, control
Air purifier processed is run with night mode, and control air purifier continues with the operation of low wind shelves until shutdown, and does not send and carry
Show sound or warning light；When the ambient sound value is more than preset sound threshold value, control air purifier is with day mode
Operational factor is run.The preset sound threshold value is the sound value of quiet environment, is peace in the environment less than preset sound threshold value
Stationary ring border, is being noisy indoor environment higher than preset sound threshold value.The present embodiment passes through, in night noisy environment, to judge
Now user in non-resting state or judges that user can now be disturbed, and for example, user is seeing TV etc., in this environment
Under, the wind shelves of air purifier can be improved, is purified indoor environment as early as possible, provide the user with more comfortable environment.In environment
Sound value is less than preset sound threshold value, enters night mode, needs control noise to produce, is run with relatively low wind shelves.In the present invention
In one embodiment, described controlled according to ambient sound value air purifier operation process can also be separately from light intensity
Execute, i.e. in air purifier running, run with high wind shelves or low wind shelves according to the control of ambient sound value, be suitable for
It is not interrupted daytime in user and user's night does not repel the situation of noise.In other embodiments of the present invention, also acceptable
It is whether, when the indoor light intensity level is less than light intensity threshold value is preset, obtaining in indoor environment has particular device to open
Open, the particular device includes but is not limited to television set, music player, computer, sound equipment etc. and sends the larger equipment of sound,
When indoor environment has particular device to open, represent that user is now in the larger environment of noise ratio, improve the wind of air purifier
Shelves, purify indoor environment as early as possible, provide the user with more comfortable environment；Environment does not have particular device in operation indoors
When, run with relatively low wind shelves.
In order to preferably describe embodiment of the present invention air purifier control process, with reference to described below：
A air purifier 100 of the embodiment of the present invention, 100 startup optimization of air purifier, particulate matter sensors 104
The particle concentration value of detection in the air, the particulate matter in the substantially each second detection primary air of particulate matter sensors 104 contains
Amount.Controller 102 analyzes whether current particle concentration is equal to preset value A1, if current particle concentration is equal to default
During grain thing concentration value value A1, controller 102 reads the corresponding setting duration value TS of current rotation speed of fan, and controller 102 is from now
Carve start timing, calculate in the air particle concentration from A1 value be down to A2 value when required cost duration TJ value.Calculate TJ value
While, the particle concentration of 104 real-time detection in the air of particulate matter sensors, see in time period, if having particulate matter dense
The trend that degree increases, if occurring in that the phenomenon that particle concentration persistently increases, shows currently have new Particulate Pollution source to add
Enter, this duration value for calculating TJ can cause TJ to calculate inaccurate, exit this because there is new Particulate Pollution to add in the air
Whether detection and the prompting of particulate matter adsorbent equipment 103 are changed.If in during this, particle concentration is to continue from A1 value to A2 value
Reduce, then the duration value TJ for being consumed when particle concentration is reduced to A2 from A1 is calculated, is stopped when particle concentration is equal to A2
TJ is only calculated.If TJ value is also not reaching to saturation less than TS value, the absorption life-span for indicating particulate matter adsorbent equipment 103,
The prompting for changing particulate matter adsorbent equipment 103 need not be given.If TJ is more than TS, then it represents that air purifier 100 can be provided by
Clean air delivery rate at least decays to the half of initial value, provides the prompting for changing particulate matter adsorbent equipment 103.And continue through TJ
The size of value, judges the absorbability of particulate matter adsorbent equipment 103, if need to continue prompting replacing particulate matter adsorbent equipment
103 prompting or Alert Level.If TJ-TS is more than zero, reads the particulate matter adsorbent equipment 103 of changing for setting and point out rank
Grade point C, C are traditionally arranged to be 10%, represent that particle concentration is reduced to the duration value TJ of A2 value from A1 value, often increase by one in advance
If during the C level of time value TS, the prompting for changing particulate matter adsorbent equipment 103 increases one-level.Intermediate parameters S value, S=are now calculated
TJ-TS-TS*C, if S value is more than zero, the prompting rank for changing particulate matter adsorbent equipment 103 increases one-level, such as, by changing
The green indicating lamp of particulate matter adsorbent equipment 103 lights and is converted to yellow green display lamp and lights.If the value of S=TJ-TS-TS*C is big
In zero, then continue S=S-TS*C is calculated, judge whether to need to continue to increase the prompting rank for changing particulate matter adsorbent equipment 103.
If S value is also greater than zero, the prompting rank for changing particulate matter adsorbent equipment 103 is further added by one-level, such as, by replacing particulate matter
The yellow green display lamp of adsorbent equipment 103 lights and is converted to yellow indicator lamp and lights.Or oily yellow indicator lamp is lighted and is switched to
Red led is lighted, and shows that the absorbability of particulate matter adsorbent equipment 103 seriously reduces, 100 energy of air purifier
The Clean air delivery rate of offer has been decayed very seriously, needs to lose no time to change or clean particulate matter adsorbent equipment 103.Such as, originally
A air purifier of the air purifier 100 of invention, during high wind shelves, its initial Clean air delivery rate be 293 cubic metres/little
When, test obtain the air purifier 100 by PM2.5 particle concentration from 150 micrograms/cubic meter be reduced to 75 micrograms/cube
Meter Shi, required cost when a length of 500 seconds.Particulate matter sensors 103 detect the PM2.5 particle content of in the air.When dispatching from the factory,
Particulate matter the first concentration value A1 is set in the hardware system of controller 102 as 150 micrograms/cubic meter；Second concentration value A2 is
75 micrograms/cubic meter.Therefore it is 1000 seconds to arrange preset time value TS.User is using air purifier after 3 months, and certain uses
During the air purifier 100, controller 102 detect particle concentration from A1 (150 micrograms/cubic meter) be reduced to 75 micrograms/
When time for being spent of cubic meter is 1350 seconds (more than the TS value for setting, 1000 seconds), air purifier 100 provides replacing granule
The prompting of thing adsorbent equipment 103, points out rank to be 3 grades, and replacing particulate matter absorption fills 103 yellow indicator lamp and lights, and represents empty
The Clean air delivery rate that gas purifier 100 currently can be provided by has already decreased to less than the 30% of initial value, needs urgent replacing
Grain thing adsorbent equipment 103.Otherwise, adsorption effect of the air purifier 100 to particulate matter can be affected.
The present invention further provides a kind of air purifier controlling device.The device is used for realizing said method.
High-level schematic functional block diagram with reference to the first embodiment that Fig. 6, Fig. 6 are air purifier controlling device of the present invention.
In one embodiment, the air purifier controlling device includes：Detection module 10, acquisition module 20 and prompting mould
Block 30.
By particulate matter sensors, the detection module 10, for, in air purifier running, detecting that air is net
Change the concentration of device endoparticle thing；
In the present embodiment, with reference to Fig. 2, the air purifier 100 includes blower fan 101, the absorption of controller 102, particulate matter
Device 103, particulate matter sensors 104.When air purifier 100 runs, blower fan 101 is drawn air into different rotation speed operation
Inside air purifier 100, particulate matter sensors 104 detect the particle concentration value inside suction air purifier 100, granule
Particulate matter in 103 adsorption gas flow of thing adsorbent equipment.In 100 running of air purifier, examined by particulate matter sensors 104
The concentration of air purifier endoparticle thing is surveyed, and judges whether the particle concentration for detecting reaches the first setting concentration.Described
First sets concentration is arranged according to the performance of air purifier 100, and after air purifier is opened, particulate matter sensors 104 are every
Separated in time (1s or 2s etc. according to user's request arrange or according to ambient conditions arrange) detection air purifier in
The concentration of grain thing.When particle concentration and first set the difference of concentration less than preset value (1% or 0.5% etc.), inspection is judged
The particle concentration for measuring reaches the first setting concentration.
The acquisition module 20, for when the concentration of the particulate matter reaches the first setting concentration, obtaining air cleaning
The concentration of device endoparticle thing is reduced to the duration needed for the second setting concentration from the described first setting concentration；
Described second sets concentration is arranged according to the performance of air purifier 100, and the value of the second setting concentration is less than
First value for setting concentration, in general first sets the twice of the value more than the value of the second setting concentration of concentration.Net in air
When particle concentration value in change device 100 reaches the first setting value, start timing, continue detection air purifier endoparticle thing
Concentration, when the concentration of particulate matter reaches the second setting concentration, stops timing, gets the concentration of air purifier endoparticle thing
The duration needed for the second setting concentration is reduced to from the described first setting concentration, the duration and preset duration is compared, is judged
Whether the value of the duration is more than predetermined threshold value.The predetermined threshold value TS value is for being the pure air according to air purifier 100
Amount, rotation speed of fan, 103 adsorption efficiency of particulate matter adsorbent equipment, the relation of the relevant parameter such as particle concentration value A1 and A2, in advance
It is arranged in controller 102, is not be set by the user, predetermined threshold value TS is negatively correlated with the wind shelves of blower fan 101.Example
Such as, predetermined threshold value TS is the initial Clean air delivery rate size that can provide with air purifier 100, the high low phase of 101 rotating speed of blower fan
The preset value of pass, during different rotation speed of fan, with different TS setting values.Such as, the high wind of the blower fan 101 of air purifier 100
During shelves operation, its corresponding Clean air delivery rate is 300 cubes ms/h, and it is 1000 seconds to arrange the corresponding TS1 value of high wind shelves；In
During the operation of wind shelves, the Clean air delivery rate of air purifier 100 is 200 cubes ms/h, arranges the corresponding TS2 value of apoplexy shelves and is
1500 seconds；During low wind shelves operation, the Clean air delivery rate of air purifier 100 is 100 cubes ms/h, arranges low wind shelves and corresponds to
TS3 value be 3000 seconds.(note：When representing that high wind speed, middle wind speed, low wind speed are corresponding default with TS1, TS2, TS3 correspondence herein
Between value TS).The wind shelves being presently according to blower fan 101 determining predetermined threshold value TS, then by the value of the duration and predetermined threshold value
Whether TS is compared, judge the value of the duration more than predetermined threshold value TS.
The reminding module 30, during for the value in the duration more than predetermined threshold value, sends particulate matter adsorbent equipment
Warning information.
When default alarm conditions are met, the warning information of particulate matter adsorbent equipment is sent, the warning information is for changing
Or prompting or the alarm of cleaning particulate matter adsorbent equipment 103.The prompting or alarm include but is not limited to auditory tone cueses or lamp
Light is pointed out, for example, audio alert, double flashing lights or display lamp are lighted.When detect user cleaning or changed particulate matter suction
After adsorption device 103, next circulation is entered, particulate matter sensors 104 detect air purifier again through particulate matter sensors
The concentration of endoparticle thing；When the concentration of the particulate matter reaches the first setting concentration, air purifier endoparticle thing is obtained
Concentration is reduced to the duration needed for the second setting concentration from the described first setting concentration；It is more than predetermined threshold value in the value of the duration
When, send the warning information of particulate matter adsorbent equipment.Usually, when taking TS value for 100 original state of air purifier, particulate matter
Concentration value is reduced to 2 times of A2 (second sets concentration) spent time from A1 (the first setting concentration), represents air purifier 100
After application a period of time, after particulate matter adsorbent equipment 103 has adsorbed certain dust granules thing, its corresponding Clean air delivery rate declines
Reduce to original state half when, air purifier 100 again by particle concentration from A1 be reduced to A2 when, required consuming when
Between value rise to 2 times of original state, it is TS value to arrange this time value.Preferably, the first concentration value of particulate matter A1 is set as
PM2.5 content is 150 micrograms/cubic meter；Second concentration value A2 is set as PM2.5 content for 75 micrograms/cubic meter.Such as, originally
A air purifier 100 of invention, during the operation of high wind speed shelves, it is 300 that pollutant are initial Clean air delivery rate during particulate matter
Cube m/h, during original state, when particle concentration value is reduced to A2 value concentration from A1 value the time required to be 500 seconds, then
It is 1000 seconds to arrange TS.Such as, user certain using the air purifier 100 when, controller 102 detect particle concentration from
A1 (150 micrograms/cubic meter) be reduced to time spent by 75 micrograms/cubic meter when being 1100 seconds (more than the TS value for setting,
1000 seconds), then provide the prompting for changing particulate matter adsorbent equipment 103.It is of course also possible to a relatively low TS value is set,
Then, when judging 1000 particulate matter of air purifier, whether the time for being spent from the default density A1 to A2 is TS value
Several times relation etc. judging whether to change particulate matter adsorbent equipment 103.
The present embodiment passes through, during air purifier purify air, to detect air purifier by particulate matter sensors
Interior particle concentration, and obtain particle concentration from first setting concentration be reduced to duration needed for the second setting concentration, in institute
When the value of duration is stated more than predetermined threshold value, send the warning information of particulate matter adsorbent equipment.The longer explanation particulate matter of the duration
The absorbability of adsorbent equipment is poorer, and poorer to the clean-up effect of air, is therefore more than predetermined threshold value in the value of the duration
Need to change or cleaning particulate matter adsorbent equipment.Realize being monitored the state of particulate matter adsorbent equipment automatically, provide more
Plus accurately replacing or the prompting of cleaning particulate matter adsorbent equipment so that accurately reasonably particulate matter adsorbent equipment is changed
Or cleaning operation.
With reference to Fig. 7, described device also includes：Judge module 40 and control module 50,
The judge module 40, for, after the concentration of the particulate matter reaches the first setting concentration, judging by granule
Whether the particle concentration of thing sensor detection raises；
The control module 50, for when particle concentration is raised, terminating flow process.
After the concentration of the particulate matter reaches the first setting concentration, particulate matter sensors 104 persistently detect air cleaning
Particle concentration in device 100, and analyze whether particle concentration persistently reduces, if it is elevated existing to there is particulate matter during this
As then exiting this detection that changes or clean particulate matter adsorbent equipment 103, terminating flow process.Because, if in air purifier
100 run durations, after the concentration of the particulate matter reaches the first setting concentration, have the elevated phenomenon of particle concentration, represent
Now there is external particle thing source that (such as, this period someone smoking, cause particle concentration to raise suddenly) is added, then this time test
Particulate matter reduce speed forbidden, it may appear that error, be not made whether to change or clean the detection of particulate matter adsorbent equipment 103,
Avoid the error for detecting.
In a preferred embodiment of the present invention, with reference to Fig. 8, the reminding module 30 includes：
Computing unit 31, for calculating the value of the duration and the difference of predetermined threshold value；
Determining unit 32, for determining the grade of warning information according to the difference；
Tip element 33, for send with determined by the corresponding warning information of grade.When the duration is more than default threshold
During value, the value of the duration and the difference of predetermined threshold value is calculated；Determine the grade of warning information according to the difference, and send with
Determined by the corresponding warning information of grade.When the difference is more than one grade of a reference difference, change or cleaning
The prompting of grain thing adsorbent equipment 103 strengthens one-level, until it reaches during highest ranking, points out air purifier 100 quit work
Or lose the effect to air cleaning.For example, particle concentration value A that controller 102 is detected is dropped from the first concentration value A1
The as little as duration spacing value TJ of the second concentration value A2, often more than set mono- grade point C level amplitude of duration value TS when, change or
The prompting of cleaning particulate matter adsorbent equipment 103 strengthens one-level, until it reaches highest cue scale.Such as, it is 10% to arrange C, table
When showing that particle concentration is reduced to, from A1, the time spent by A2 and often increases C level amplitude (10%) than setting value TS, change
Or the prompting of cleaning particulate matter adsorbent equipment 103 strengthens one-level.Such as, when the high wind shelves of air purifier 100 run, the TS of setting
Being worth for 1000 seconds, time that A2 spent is reduced to more than 1000 seconds when air purifier 100 detects particle concentration from A1
During less than 1100 seconds, the prompting for changing particulate matter adsorbent equipment 103 is provided, the display lamp for changing particulate matter adsorbent equipment 103 is
Green；It is less than more than 1100 seconds when air purifier 100 detects particle concentration and is reduced to, from A1, the time spent by A2
When 1200 seconds, the prompting for changing particulate matter adsorbent equipment 103 increases one-level, such as, changes the instruction of particulate matter adsorbent equipment 103
Lamp is yellow green by green conversion；It is reduced to, from A1, the time spent by A2 when air purifier 100 detects particle concentration
During more than 1200 seconds less than 1300 seconds, the prompting for changing particulate matter adsorbent equipment 103 increases by two grades, such as, changes particulate matter suction
The display lamp of adsorption device is converted to yellow by yellow green；A2 is reduced to when air purifier 100 detects particle concentration from A1
When the time for being spent was more than 1300 seconds, the prompting for changing particulate matter adsorbent equipment 300 reaches the superlative degree, such as, changes granule
The display lamp of thing adsorbent equipment is converted to redness by yellow.Represent that the particulate matter for adsorbing on particulate matter adsorbent equipment 103 is non-
Chang Duo, in the urgent need to changing immediately or cleaning particulate matter adsorbent equipment 103, otherwise, can affect air purifier 100 to granule
The clean-up effect of thing.
In an embodiment of the present invention, judge that the prompting is changed or whether the grade of cleaning reaches highest alarm grade；
When highest alarm grade is reached, control air purifier is out of service.By controlling air purifier out of service, it is ensured that
Air purifier closes save energy after failure state.Preferably, in control air purifier, (5 points of Preset Time is run
Clock or 10 minutes), turn off air purifier.
Further, the acquisition module 20, is additionally operable in air purifier running, obtains indoor light intensity
Value；
The control module 50, is additionally operable to when the indoor light intensity level is more than light intensity threshold value is preset, control
Air purifier is run with day mode；Control module 50 is additionally operable to
When the indoor light intensity level is less than light intensity threshold value is preset, control air purifier is transported with night mode
OK, the warning information of particulate matter adsorbent equipment is not sent.Air purifier 100 also includes optical sensor, can detect room light
Line rob meat, judge current be whether dark night mode, when for night mode, do not provide replacing or clean particulate matter
The sound of adsorbent equipment 103 or light prompt, are rested with interruption-free user.Further, in a preferred embodiment of the present invention,
The light of the indoor environment that light sensors are arrived is weaker, it should enter Night operation.But in order to improve air cleaning energy
Power, more quickly provides comfortable indoor environment.When the indoor light intensity level is less than light intensity threshold value is preset, obtain
Ambient sound value produced by taking in indoor environment.When the ambient sound value is less than preset sound threshold value, control air is net
Change device with night mode run, control air purifier continue with low wind shelves operation until shutdown, and do not send voice prompt or
Warning light；When the ambient sound value is more than preset sound threshold value, control air purifier is with the operational factor of day mode
Operation.The preset sound threshold value is the sound value of quiet environment, is quiet environment in the environment less than preset sound threshold value,
It is noisy indoor environment higher than preset sound threshold value.The present embodiment passes through, in night noisy environment, to judge now user
It is in non-resting state or judges that user can now be disturbed, for example, user is seeing TV etc., in such circumstances, Ke Yiti
The wind shelves of high air purifier, purify indoor environment as early as possible, provide the user with more comfortable environment.It is less than in ambient sound value
Preset sound threshold value, enters night mode, needs control noise to produce, is run with relatively low wind shelves.In an embodiment of the present invention,
The process for controlling air purifier operation according to ambient sound value can also be executed separately from light intensity, i.e.
In air purifier running, run with high wind shelves or low wind shelves according to the control of ambient sound value, it is adaptable to user daytime
It is not interrupted and user's night does not repel the situation of noise.In other embodiments of the present invention, also it is also possible that in the room
When interior light intensity value is less than light intensity threshold value is preset, whether in indoor environment have particular device open, described specific if obtaining
Equipment includes but is not limited to television set, music player, computer, sound equipment etc. and sends the larger equipment of sound, and environment has indoors
When particular device is opened, represent that user is now in the larger environment of noise ratio, the wind shelves of air purifier are improved, is purified as early as possible
Indoor environment, provides the user with more comfortable environment；Environment does not have particular device in during operation indoors, with relatively low wind shelves
Operation.
In order to preferably describe embodiment of the present invention air purifier control process, with reference to described below：
A air purifier 100 of the embodiment of the present invention, 100 startup optimization of air purifier, particulate matter sensors 104
The particle concentration value of detection in the air, the particulate matter in the substantially each second detection primary air of particulate matter sensors 104 contains
Amount.Controller 102 analyzes whether current particle concentration is equal to preset value A1, if current particle concentration is equal to default
During grain thing concentration value value A1, controller 102 reads the corresponding setting duration value TS of current rotation speed of fan, and controller 102 is from now
Carve start timing, calculate in the air particle concentration from A1 value be down to A2 value when required cost duration TJ value.Calculate TJ value
While, the particle concentration of 104 real-time detection in the air of particulate matter sensors, see in time period, if having particulate matter dense
The trend that degree increases, if occurring in that the phenomenon that particle concentration persistently increases, shows currently have new Particulate Pollution source to add
Enter, this duration value for calculating TJ can cause TJ to calculate inaccurate, exit this because there is new Particulate Pollution to add in the air
Whether detection and the prompting of particulate matter adsorbent equipment 103 are changed.If in during this, particle concentration is to continue from A1 value to A2 value
Reduce, then the duration value TJ for being consumed when particle concentration is reduced to A2 from A1 is calculated, is stopped when particle concentration is equal to A2
TJ is only calculated.If TJ value is also not reaching to saturation less than TS value, the absorption life-span for indicating particulate matter adsorbent equipment 103,
The prompting for changing particulate matter adsorbent equipment 103 need not be given.If TJ is more than TS, then it represents that air purifier 100 can be provided by
Clean air delivery rate at least decays to the half of initial value, provides the prompting for changing particulate matter adsorbent equipment 103.And continue through TJ
The size of value, judges the absorbability of particulate matter adsorbent equipment 103, if need to continue prompting replacing particulate matter adsorbent equipment
103 prompting or Alert Level.If TJ-TS is more than zero, reads the particulate matter adsorbent equipment 103 of changing for setting and point out rank
Grade point C, C are traditionally arranged to be 10%, represent that particle concentration is reduced to the duration value TJ of A2 value from A1 value, often increase by one in advance
If during the C level of time value TS, the prompting for changing particulate matter adsorbent equipment 103 increases one-level.Intermediate parameters S value, S=are now calculated
TJ-TS-TS*C, if S value is more than zero, the prompting rank for changing particulate matter adsorbent equipment 103 increases one-level, such as, by changing
The green indicating lamp of particulate matter adsorbent equipment 103 lights and is converted to yellow green display lamp and lights.If the value of S=TJ-TS-TS*C is big
In zero, then continue S=S-TS*C is calculated, judge whether to need to continue to increase the prompting rank for changing particulate matter adsorbent equipment 103.
If S value is also greater than zero, the prompting rank for changing particulate matter adsorbent equipment 103 is further added by one-level, such as, by replacing particulate matter
The yellow green display lamp of adsorbent equipment 103 lights and is converted to yellow indicator lamp and lights.Or oily yellow indicator lamp is lighted and is switched to
Red led is lighted, and shows that the absorbability of particulate matter adsorbent equipment 103 seriously reduces, 100 energy of air purifier
The Clean air delivery rate of offer has been decayed very seriously, needs to lose no time to change or clean particulate matter adsorbent equipment 103.Such as, originally
A air purifier of the air purifier 100 of invention, during high wind shelves, its initial Clean air delivery rate be 293 cubic metres/little
When, test obtain the air purifier 100 by PM2.5 particle concentration from 150 micrograms/cubic meter be reduced to 75 micrograms/cube
Meter Shi, required cost when a length of 500 seconds.Particulate matter sensors 103 detect the PM2.5 particle content of in the air.When dispatching from the factory,
Particulate matter the first concentration value A1 is set in the hardware system of controller 102 as 150 micrograms/cubic meter；Second concentration value A2 is
75 micrograms/cubic meter.During consideration is actually used, reduce pure air because there is barrier around air purifier 100
Amount, it is 1000 seconds therefore to arrange preset time value TS.User is using air purifier after 3 months, and certain uses the air cleaning
During device 100, controller 102 detects particle concentration and is reduced to 75 micrograms/cubic meter from A1 (150 micrograms/cubic meter) to be spent
The time that takes be 1350 seconds when (more than set TS value, 1000 seconds), air purifier 100 be given changes particulate matter adsorbent equipment
103 prompting, points out rank to be 3 grades, and replacing particulate matter absorption fills 103 yellow indicator lamp and lights, and represents air purifier 100
The Clean air delivery rate that currently can be provided by has already decreased to less than the 30% of initial value, needs urgent replacing particulate matter adsorbent equipment
103.Otherwise, adsorption effect of the air purifier 100 to particulate matter can be affected.
The present invention also provides a kind of air purifier, and above-mentioned air purifier controlling device is used for the air purifier
In.The air purifier includes the indispensability hardware such as blower fan, particulate matter adsorbent equipment, particulate matter sensors.The air purifier
By, during air purifier purify air, detecting the particle concentration in air purifier by particulate matter sensors,
And obtain particle concentration and be reduced to duration needed for the second setting concentration from the first setting concentration, the duration value more than pre-
If during threshold value, the warning information of particulate matter adsorbent equipment is sent.The longer energy of adsorption that particulate matter adsorbent equipment is described of the duration
Power is poorer, and poorer to the clean-up effect of air, and therefore the value in the duration needs to change more than predetermined threshold value or cleans
Particulate matter adsorbent equipment.Realize being monitored the state of particulate matter adsorbent equipment automatically, more accurate replacing or clear is provided
Wash the prompting of particulate matter adsorbent equipment so that accurately reasonably particulate matter adsorbent equipment is changed or cleaning operation.
The preferred embodiments of the present invention are these are only, the scope of the claims of the present invention is not thereby limited, every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of air purifier control method, the air purifier includes particulate matter adsorbent equipment and particulate matter sensors,
Characterized in that, including step：
The concentration of air purifier endoparticle thing in air purifier running, is detected by particulate matter sensors；
When the concentration of the particulate matter reaches the first setting concentration, the concentration of air purifier endoparticle thing is obtained from described the
One setting concentration is reduced to the duration needed for the second setting concentration；
When the value of the duration is more than predetermined threshold value, the warning information of particulate matter adsorbent equipment is sent.
2. air purifier control method as claimed in claim 1, it is characterised in that the particulate matter adsorbent equipment that sends
Warning information includes：
Calculate the value of the duration and the difference of predetermined threshold value；
Determine the grade of warning information according to the difference, and send with determined by the corresponding warning information of grade.
3. air purifier control method as claimed in claim 1, it is characterised in that the predetermined threshold value and air purifier
Wind shelves negative correlation.
4. the air purifier control method as described in any one of claims 1 to 3, it is characterised in that methods described also includes：
After the concentration of the particulate matter reaches the first setting concentration, the particle concentration for detecting by particulate matter sensors is judged
Whether raise；
When particle concentration is raised, terminate flow process.
5. the air purifier control method as described in any one of claims 1 to 3, it is characterised in that methods described also includes：
In air purifier running, indoor light intensity level is obtained；
When the indoor light intensity level is more than light intensity threshold value is preset, control air purifier is run with day mode；
When the indoor light intensity level is less than light intensity threshold value is preset, control air purifier is run with night mode,
The warning information of particulate matter adsorbent equipment is not sent.
6. a kind of air purifier controlling device, it is characterised in that include：
Detection module, for, in air purifier running, detecting air purifier endoparticle by particulate matter sensors
The concentration of thing；
Acquisition module, for when the concentration of the particulate matter reaches the first setting concentration, obtaining air purifier endoparticle thing
Concentration from described first setting concentration be reduced to the duration needed for the second setting concentration；
Reminding module, for when default alarm conditions are met, sending the warning information of particulate matter adsorbent equipment.
7. air purifier controlling device as claimed in claim 6, it is characterised in that the reminding module includes：
Computing unit, for calculating the value of the duration and the difference of predetermined threshold value；
Determining unit, for determining the grade of warning information according to the difference；
Tip element, for send with determined by the corresponding warning information of grade.
8. air purifier controlling device as claimed in claim 7, it is characterised in that the predetermined threshold value and air purifier
Wind shelves negative correlation.
9. air purifier controlling device as claimed in claim 7 or 8, it is characterised in that described device also includes：
Judge module, for after the concentration of the particulate matter reaches the first setting concentration；
Control module, for when particle concentration is raised, terminating flow process.
10. air purifier controlling device as claimed in claim 9, it is characterised in that the acquisition module, is additionally operable in sky
In gas purifier running, indoor light intensity level is obtained；
The control module, is additionally operable to when the indoor light intensity level is more than light intensity threshold value is preset, and control air is net
Change device to run with day mode；Control module is additionally operable to
When the indoor light intensity level is less than light intensity threshold value is preset, control air purifier is run with night mode,
Reminding module does not send the warning information of particulate matter adsorbent equipment.
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Application publication date: 20170222 |