CN106247532B - Air purifier control method and device - Google Patents

Air purifier control method and device Download PDF

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Publication number
CN106247532B
CN106247532B CN201610630100.1A CN201610630100A CN106247532B CN 106247532 B CN106247532 B CN 106247532B CN 201610630100 A CN201610630100 A CN 201610630100A CN 106247532 B CN106247532 B CN 106247532B
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particulate matter
air purifier
value
adsorption device
current
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CN106247532A (en
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游斌
黄刚
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Midea Group Co Ltd
Midea Group Wuhan Refrigeration Equipment Co Ltd
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Midea Group Co Ltd
Midea Group Wuhan Refrigeration Equipment Co Ltd
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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
    • 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
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Quality & Reliability (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Air Conditioning Control Device (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

The invention discloses a control method and a control device of an air purifier, wherein the air purifier comprises a particulate matter adsorption device and a particulate matter sensor, and the method comprises the following steps: in the operation process of the air purifier, detecting the current particulate matter concentration through a particulate matter sensor, and determining a particulate matter weight value corresponding to the current particulate matter concentration and a wind speed weight value corresponding to the current fan rotating speed; calculating to obtain the single operation time length of the air purifier according to the current particulate matter concentration, the particulate matter weight value and the wind speed weight value, and calculating to obtain the accumulated operation time length of the air purifier according to the single operation time length calculated each time; and sending out alarm information of the particulate matter adsorption device when the accumulated running time is longer than a preset threshold value. The invention automatically monitors the state of the particulate matter adsorption device, provides more accurate prompt for replacing or cleaning the particulate matter adsorption device, and ensures that the particulate matter adsorption device can be accurately and reasonably replaced or cleaned.

Description

Air purifier control method and device
Technical Field
The invention relates to the technical field of air purification treatment, in particular to a control method and a control device for an air purifier.
Background
In the conventional air purifier, a user does not know when the filter screen is replaced well or forgets to clean the electrostatic adsorption device inside the air purifier. Often, the filter screen is dirty, the air purifier basically has no function of purifying particles in the air, or the filter screen is forgotten to be replaced; or, because the indoor air itself is excellent, the air purifier has not yet reached the standard of needing to be replaced, and the user has replaced the filter screen prematurely, leads to user's use cost to rise, has also caused the waste of resource simultaneously.
In conclusion, the filter screen of the air purifier is replaced according to the intention of a user, so that the replacement time of the filter screen is poor in accuracy.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a control method and a control device for an air purifier, and aims to solve the problem that the filter screen of the existing air purifier is replaced according to the intention of a user, so that the replacement time accuracy of the filter screen is poor.
In order to achieve the above object, the present invention provides a control method for an air purifier including a particulate adsorption device and a particulate sensor, the method comprising the steps of:
in the operation process of the air purifier, detecting the current particulate matter concentration through a particulate matter sensor, and determining a particulate matter weight value corresponding to the current particulate matter concentration and a wind speed weight value corresponding to the current fan rotating speed;
calculating to obtain the single operation time length of the air purifier according to the current particulate matter concentration, the particulate matter weight value and the wind speed weight value, and calculating to obtain the accumulated operation time length of the air purifier according to the single operation time length calculated each time;
and sending out alarm information of the particulate matter adsorption device when the accumulated running time is longer than a preset threshold value.
Preferably, the step of calculating the accumulated operation time period of the air purifier according to the single operation time period calculated each time includes:
acquiring all calculated single-time operation durations in a calculation period;
and summing all the acquired single operation time lengths to calculate the accumulated operation time length of the air purifier.
Preferably, the particulate matter weight value is positively correlated with the particulate matter concentration; the wind speed weight value is positively correlated with the rotating speed of the fan.
Preferably, the step of sending an alarm message of the particulate matter adsorbing device includes:
calculating the running time difference between the accumulated running time and a preset threshold;
and determining an alarm level corresponding to the operation time difference, and sending alarm information of the particulate matter adsorption device corresponding to the alarm level.
Preferably, after the step of determining the alarm level corresponding to the running time length difference, the method further includes:
judging whether the alarm level reaches the highest alarm level;
and when the highest alarm level is reached, controlling the air purifier to stop running.
In addition, to achieve the above object, the present invention also provides an air cleaner control device including:
the detection module is used for detecting the current concentration of the particulate matters through the particulate matter sensor in the operation process of the air purifier;
the determining module is used for determining a particle weight value corresponding to the current particle concentration and a wind speed weight value corresponding to the current fan rotating speed;
the calculation module is used for calculating the single operation time of the air purifier according to the current particulate matter concentration, the particulate matter weight value and the wind speed weight value, and calculating the accumulated operation time of the air purifier according to the single operation time calculated each time;
and the prompt module is used for sending out alarm information of the particulate matter adsorption device when the accumulated running time is longer than a preset threshold value.
Preferably, the calculation module is further configured to obtain all calculated single operation durations in a calculation period; and summing all the acquired single operation time lengths to calculate the accumulated operation time length of the air purifier.
Preferably, the particulate matter weight value is positively correlated with the particulate matter concentration; the wind speed weight value is positively correlated with the rotating speed of the fan.
Preferably, the prompt module includes:
the calculating unit is used for calculating the difference value of the accumulated running time length and the running time length of a preset threshold;
and the prompting unit is used for determining the alarm level corresponding to the running time difference value and sending alarm information of the particulate adsorption device corresponding to the alarm level.
Preferably, the method further comprises the following steps:
the judging module is used for judging whether the alarm level reaches the highest alarm level;
and the control module is used for controlling the air purifier to stop running when the highest alarm level is reached.
According to the invention, in the process of purifying air by the air purifier, the effective accumulated operation time of the air purifier is obtained by calculation according to the particulate matter concentration, the particulate matter weight value and the fan weight value, the particulate matter adsorption device is prompted to be replaced or cleaned according to the accumulated operation time, the state of the particulate matter adsorption device is automatically monitored, the more accurate prompt for replacing or cleaning the particulate matter adsorption device is provided, and the particulate matter adsorption device is accurately and reasonably replaced or cleaned.
Drawings
FIG. 1 is a schematic flow chart illustrating a control method of an air cleaner according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of an air purifier according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a control method of an air cleaner according to a second embodiment of the present invention;
FIG. 4 is a functional block diagram of a control device of an air cleaner according to a first embodiment of the present invention;
FIG. 5 is a block diagram illustrating a refinement function of one embodiment of the hinting module of FIG. 4;
fig. 6 is a functional block diagram of a control device of an air cleaner according to a second embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a control method of an air purifier according to a first embodiment of the present invention.
In one embodiment, the air purifier control method includes:
step S10, detecting the current particulate matter concentration through a particulate matter sensor in the running process of the air purifier, and determining a particulate matter weight value corresponding to the current particulate matter concentration and a wind speed weight value corresponding to the current fan rotating speed;
in the present embodiment, referring to fig. 2, the air purifier 100 includes a blower 101, a controller 102, a particulate matter adsorbing device 103, and a particulate matter sensor 104, and the controller 102 includes a main chip 105, a memory 106, and a clock chip 107. When the air purifier 100 is operated, the fan 101 operates at different rotation speeds to suck air into the air purifier 100, the particle sensor 104 detects an initial particle concentration value K of the air sucked into the air purifier 100, and the particle adsorption device 103 adsorbs particles in the air flow. In the operation process of the air purifier 100, the current particulate matter concentration K is detected through the particulate matter sensor 104, and a particulate matter weight value WK corresponding to the current particulate matter concentration K and a wind speed weight value WF corresponding to the current fan rotating speed are obtained. The weight value of the particles is positively correlated with the concentration of the particles; the wind speed weight value is positively correlated with the rotating speed of the fan. Namely, the weight value WK of the particles is positively correlated with the concentration value K of the particles in the air, and when the concentration value K of the particles in the air is high, the corresponding weight value WK of the particles is large; when the concentration value K of the particulate matters in the air is low, the weight value WK of the corresponding particulate matters is small. Preferably, the particulate matter weight value WK is set as the ratio of the particulate matter concentration value K in air to a certain nominal particulate matter concentration value K0, WK being K/K0. The wind speed weight value WF is positively correlated with the fan rotating speed F, and when the fan rotating speed F is high, the corresponding wind speed weight value WF is large; when the rotating speed F of the fan is low, the corresponding wind speed weighted value WF is small. Preferably, the wind speed weight value WF is set to a ratio of the fan speed F to a rated speed F0 of the air cleaner 100, and WF is F/F0.
Step S20, calculating to obtain the single operation time length of the air purifier according to the current particulate matter concentration, the particulate matter weight value and the wind speed weight value, and calculating to obtain the accumulated operation time length of the air purifier according to the single operation time length calculated each time;
during the operation of the air purifier, the clock chip 107 records the current operation time TI of the air purifier at a certain wind speed and a certain particulate matter concentration. After the current particulate matter concentration, the particulate matter weight value and the wind speed weight value are obtained, calculating the single operation time length of the air purifier, wherein the single operation time length TZ is obtained by multiplying the current particulate matter weight value WK by the current wind speed weight value WF and then multiplying the current operation time length TI, namely, TZ is WK WF TI and is the effective operation time length under the current wind speed and the current particulate matter concentration. The single operating time TZ calculated each time is accumulated in the memory 106 to obtain the total effective operating time duration of the air purifier 100, i.e., the accumulated operating time duration TTA. In order to better control the operation process of the air purifier, the accumulated operation time length is an accumulated operation time length TTA in the accumulated operation period, specifically: acquiring all calculated single-time operation durations in a calculation period; and summing all the acquired single operation durations to calculate the accumulated operation duration of the air purifier, wherein the calculation period corresponds to an accumulated period.
And step S30, when the accumulated running time is longer than a preset threshold value, sending out alarm information of the particulate matter adsorption device.
The preset threshold is a purification life duration value TB, that is, an effective filtration life duration value of the particulate adsorption device 103. The purification life time TB of the particulate matter adsorption device 103 is the purification life time corresponding to the particulate matter adsorption device 103 when the clean air amount of the air purifier 100 is reduced to 50% of the initial clean air amount. The purification life duration value is a purification life duration value TB calculated or tested based on the cumulative purification amount measured by the particulate matter adsorption device 103 of the air purifier 100, the room area to which the air purifier 100 is applied, the room ventilation rate, and the outdoor particulate matter having a certain specific concentration value. After the accumulated running time TTA is calculated, whether the TTA is greater than or equal to TB is judged, and when the TTA is greater than or equal to TB, warning information of the particulate matter adsorption device is sent out, wherein the warning information is a prompt or an alarm for replacing or cleaning the particulate matter adsorption device 103. The prompts or alerts include, but are not limited to, audible or light prompts, such as voice alerts, flashing lights or indicator lights, etc. When it is detected that the user has cleaned or replaced the particulate matter adsorbing device 103, the TTA of the air purifier 100 may be set to zero. The zero setting mode comprises the following steps: prompting a user to perform zero setting operation, wherein the user can continuously press a certain key for more than 10s or 5s for 2 times, or press a reset button and the like by means of a tool so as to avoid misoperation; or the clock chip 107 is automatically reset. If the cumulative operating time length TTA is smaller than the effective operating time length TB, the next cycle is entered, the particulate matter sensor 104 detects the particulate matter concentration value K in the air again, adopts the new particulate matter concentration value K and the new fan operating rotating speed value F, calculates a new effective operating time length TZ of this time and updates the total effective operating time length TTA and the like under the conditions of the particulate matter concentration and the fan rotating speed and the corresponding operating time length value. The update process may be: calculating a single effective runtime long value TZ, wherein TZ is WK and TI; then, the main chip 105 reads the total effective runtime long value TTA in the memory 106, and accumulates the calculated current effective runtime long value TZ into the total effective runtime long value TTA, that is: TTA new + TTA old + TZ.
This embodiment is through at air purifier air-purifying in-process, calculate according to particulate matter concentration, particulate matter weight and fan weight and obtain that an effectual air purifier's accumulative total operation is long, long suggestion is changed or washs particulate matter adsorption equipment according to this accumulative total operation, realize monitoring particulate matter adsorption equipment's state automatically, provide more accurate change or wash particulate matter adsorption equipment's suggestion, make accurate reasonable change or washing operation particulate matter adsorption equipment.
Referring to fig. 3, fig. 3 is a flow chart illustrating a control method of an air purifier according to a second embodiment of the present invention. Based on the first embodiment of the method, the step S30 includes:
step S31, calculating the difference value of the accumulated running time and the running time of a preset threshold;
and step S32, determining an alarm level corresponding to the running time difference, and sending alarm information of the particulate matter adsorption device corresponding to the alarm level.
In the above embodiment, as long as the accumulated operating time is greater than or equal to the preset threshold, the warning message of the particulate matter adsorbing device 103 is sent to prompt the replacement or cleaning of the particulate matter adsorbing device 103. The difference between this embodiment and the first embodiment is: when the long value TTA exceeds the purification life time long value TB by a set level value a for the total effective operation of the air purifier 100, the prompt or alarm for replacing or cleaning the particulate matter adsorbing device 103 is increased by one level until the highest alarm level of the air purifier 100 is reached. Preferably, the grade value A is 10% of the purge life duration value. For example, when the purification life time TB is 1334 hours and the cumulative total effective operation time TTA of the air purifier 100 is greater than 1334 hours, a prompt is given to light up the green light for replacing the filter screen. At this time, although the clean air amount of the air purifier 100 is attenuated to 50% of the initial clean air amount, at this time, the air purifier 100 can purify the air even if the user does not immediately replace the particulate matter adsorption device 103, and only the purification effect is poor and the purification speed is slow, so the air purifier 100 gives a preliminary prompt or alarm to replace the particulate matter adsorption device 103. When the total effective operation time long value TTA is accumulated to 1467.5 hours, at this time, the total effective operation time long value TTA is 10% greater than the purification life time long value TB (1334 hours), the air purifier 100 changes from green light lighting to yellow-green light lighting, and the alarm for replacing the particulate matter adsorption device 103 is raised by one step. When the total effective operation long value TTA is cumulatively 1601 hours, the total effective operation long value TTA is 20% greater than the purification life time long value TB (1334 hours), and the air purifier 100 changes from lighting yellow green light to lighting yellow light, and the alarm accumulation for replacing the particulate matter adsorption device 103 is improved by two stages. By analogy, only when the total effective operation long value TTA is greater than the purification life long value TB 50%, the red indicator light that needs to be changed by the particulate matter adsorption device 103 lights up, reaches the highest alarm level, indicates that the ability of the air purifier 100 to adsorb particulate matter is very poor, and the particulate matter adsorption device 103 needs to be changed urgently. And when judging whether the accumulated running time length value TTA is larger than the effective life time length value TB by one or more grade values A, calculating intermediate datA S, wherein S is TTA-TB-A, then judging whether S is larger than zero, if S is larger than 0, indicating whether the total effective running time length value TTA is larger than the effective life time length value TB by at least one grade value A, at least increasing the prompting grade of the replacement particulate matter adsorption device 103 by one grade, then calculating S again to be S-A, and then judging whether S is larger than 0 again, thereby judging whether the prompting of the replacement particulate matter adsorption device 103 is further increased by one grade until the highest prompting grade, and repeating the steps. When S is less than zero, the concentration value K of the particulate matters in the air is detected again, a new effective operation time value TZ of this time is calculated, the total effective operation time value TTA is continuously updated and accumulated, and the process is repeated.
In an embodiment of the present invention, after determining the alarm level corresponding to the running time difference, determining whether the alarm level reaches the highest alarm level; and when the highest alarm level is reached, controlling the air purifier to stop running. By controlling the air purifier to stop running, the air purifier is ensured to be in a failure state, and the energy is saved. Preferably, after the alarm level corresponding to the running time difference is determined, the air purifier is controlled to run for a preset time (5 minutes or 10 minutes), and the air purifier is turned off.
The different warning levels of difference design that this embodiment corresponds accumulative running duration and is greater than preset threshold value send different prompt messages through warning the grade difference to audio-visual suggestion is changed or is washd particulate matter adsorption equipment's emergency degree, improves air purifier's use and experiences.
For a better description of the air purifier control process according to an embodiment of the present invention, reference is made to the following description:
when the air purifier 100 according to the embodiment of the present invention operates at a high wind rated rotational speed, the corresponding clean air amount is 300 cubic meters per hour, that is, 300 cubic meters of clean air can be provided per hour, and when the clean air amount of the air purifier 100 is tested to be attenuated to 50% of the initial clean air amount, the cumulative purification amount is 13000 milligrams, that is, after 13000 milligrams of particulates are adsorbed by the particulate adsorption device 103 of the air purifier 100, the clean air amount is attenuated to 150 cubic meters per hour from 300 cubic meters per hour. When the concentration of outdoor pollutants is 300 micrograms/cubic meter, the indoor ventilation rate is 0.6 times/hour, the indoor area is 29 square meters, the height of an indoor layer is 2.4 meters, the natural settling rate of particles is 0.2 times/hour, indoor particles are maintained in an excellent air quality state of 5 micrograms/cubic meter, after the purification operation is tested for 1 hour, the weight of dust adsorbed by the particle adsorption device 103 is 9.744 milligrams, and the primary purification efficiency of the particle adsorption device 103 is 95 percent, namely, when 100 micrograms of particles in the air pass through the particle adsorption device 103 once, 95 micrograms of particles can be adsorbed by the particle adsorption device 103, and only 5 micrograms of particles return to the air for circulation again. The calculation yields 32.48 micrograms of particulate matter adsorbed per cubic meter of air (9744/300-32.48), and the average concentration of particulate matter entering the air purifier 100 is 34.19 micrograms/cubic meter (32.48/0.95-34.19), which is defined as the nominal particulate matter concentration value K0 (i.e., setting K0-34.19 micrograms/cubic meter), calculated as the primary purification efficiency of the particulate matter adsorbing device 103 being 95%. When the air purifier 100 is in operation, the particulate matter sensor 104 detects that the particulate matter concentration K in the air is different, and has different particulate matter weight values WK, the particulate matter weight value WK is set to be the ratio of the particulate matter concentration value K in the air to the rated particulate matter concentration value K0, and WK is K/K0. When the concentration value K of the particulate matters in the air is high, the weight value WK of the corresponding particulate matters is large; when the concentration value K of the particulate matters in the air is low, the weight value WK of the corresponding particulate matters is small. For example, when the particulate matter sensor 104 detects that the particulate matter concentration K is 200 micrograms/cubic meter, the corresponding particulate matter weight WK is 200/34.19-5.85; for another example, when the pm sensor 104 detects that the pm concentration K is 120 μ g/cubic meter, the corresponding pm weight WK is 120/34.19 — 3.51.
The purification life duration value TB of the air purifier 100 was calculated to be 1334 hours (13000/9.744 being 1334 hours), and the rated rotation speed F0 of the air purifier 100 was set to a rotation speed at which the clean air amount was equal to 300 cubic meters per hour. Such as: the operating speed for this nominal state is 800 rpm. Set F0 to 800. The wind speed weight value WF is set to be the ratio of the fan speed F to the rated speed F0 of the air purifier 100 (F0 is 800 rpm), and WF is F/F0. When the rotating speed F of the fan is high, the corresponding wind speed weighted value WF is large; when the rotating speed F of the fan is low, the corresponding wind speed weighted value WF is small. For example, when the operating speed of the fan is 400 rpm, the corresponding wind speed weight value WF is 0.5, and when the operating speed of the fan is ultra high speed, 1100 rpm, the corresponding wind speed weight value WF is 1.375.
For example, when the air purifier 100 is shut down last time, the total effective operation duration TTA is 350 hours, this time, when the air purifier 100 starts to operate, the particulate matter sensor 104 detects that the particulate matter concentration K is 180 micrograms/cubic meter, the corresponding particulate matter weight WK is 180/34.19 is 5.26, the fan rotation speed F of the fan 101 at this time is 950 revolutions/minute, the corresponding wind speed weight WF is 950/800 is 1.1875, the clock chip 107700 tests that the air purifier 100 continuously operates for 0.25 hour under the particulate matter concentration K value and the fan rotation speed F, and the effective operation duration TZ at this stage is: when TZ is WK, WF, TI is 5.26, 1.1875, 0.25 is 1.562 hours, the master chip 105 integrates the current effective operation time length TZ (1.562 hours) into the memory 106, and the new total effective operation time length TTA is updated from the previous 350 hours to 351.562 hours. The above is only an example of a certain particulate matter concentration K value and a certain fan rotation speed F, actually, the particulate matter concentration changes at any time, the clock chip 107 calculates a time duration corresponding to each state at any time according to the change of the particulate matter concentration K and the fan rotation speed F, the time duration may be in units of seconds, the main chip 105 calculates a particulate matter weight value WK (WK ═ K/K0) corresponding to the weight according to the corresponding particulate matter concentration value K and calculates a wind speed weight value WF (WF ═ F/F0) corresponding to the fan rotation speed F value at any time, then calculates a corresponding effective operation time length value TZ, TZ ═ WK ═ WF TI, updates the total effective operation time length value TTA at any time, and writes the total effective operation time length value TTA into the memory 106 to be stored at any time.
Of course, the particulate matter concentration value K may be set to different sections, and the particulate matter concentrations in different sections may be set to a corresponding particulate matter concentration weight value, for example, when the particulate matter concentration value K is in the range of 80 micrograms/cubic meter to 100 micrograms/cubic meter, the intermediate particulate matter concentration value K may be taken as 90 micrograms/cubic meter, and the corresponding particulate matter weight value WK is set to 90/34.19 to 2.63; when the particulate matter concentration value K is in the interval of 50 micrograms/cubic meter to 80 micrograms/cubic meter, the intermediate particulate matter concentration value K may be 65 micrograms/cubic meter, the corresponding particulate matter weight value WK is set to 65/34.19 to 1.90, when the same particulate matter concentration interval is used, the clock chip 107 counts the operation time value T of the particulate matter concentration value interval together, and the main chip 105 calculates the corresponding effective operation time length value TZ according to the wind speed weight value WF, and accumulates the corresponding effective operation time length value TZ into the total effective operation time length value TTA, that is: the new total valid runtime long value TTA is obtained and updated to the memory 106 for the next time the master chip 105 reads.
When the integrated total effective operation long value TTA of the air purifier 100 is greater than the purification life long value TB (for example, TB is 1334 hours, TTA is 1334.1 hours), the air purifier 100 gives a prompt or alarm to replace or clean the particulate matter adsorption device 103. For example, when the particulate matter adsorbing device 103 is a blocking type filter device such as kpa, a prompt or an alarm for replacement is given, and when the particulate matter adsorbing device 103 is an electrostatic adsorption type filter device, a prompt for cleaning the filter device is given, so that a user can clean dust on the static adsorption device in time, and the particulate matter adsorption effect is not affected, or the service life of the electrostatic adsorption device is not affected. The prompt or alarm for replacing or cleaning the particulate matter adsorption device 103 is a sound prompt, a light prompt, or the like, for example, a voice alarm, a double flashing light, an indicator light on, or the like.
Further, an air purifier 100 of the above-described type is characterized in that, when the long value TTA exceeds the purification life time long value TB by a set level value a for the total effective operation of the air purifier 100, the prompt or alarm for replacing or cleaning the particulate matter adsorbing device 103 is increased by one step until the highest alarm level of the air purifier 100 is reached. Preferably, the grade value A is 10% of the purge life duration value. For example, when the purification life time TB is 1334 hours and the cumulative total effective operation time TTA of the air purifier 100 is greater than 1334 hours, a prompt is given to light up the green light for replacing the filter screen. At this time, although the clean air amount of the air purifier 100 is attenuated to 50% of the initial clean air amount, at this time, the air purifier 100 can purify the air even if the user does not immediately replace the particulate matter adsorption device 103, and only the purification effect is poor and the purification speed is slow, so the air purifier 100 gives a preliminary prompt or alarm to replace the particulate matter adsorption device 300. When the total effective operation time long value TTA is accumulated to 1467.5 hours, at this time, the total effective operation time long value TTA is 10% greater than the purification life time long value TB (1334 hours), the air purifier 100 changes from green light lighting to yellow-green light lighting, and the alarm for replacing the particulate matter adsorption device 103 is raised by one step. When the total effective operation long value TTA is cumulatively 1601 hours, the total effective operation long value TTA is 20% greater than the purification life time long value TB (1334 hours), and the air purifier 100 changes from lighting yellow green light to lighting yellow light, and the alarm accumulation for replacing the particulate matter adsorption device 103 is improved by two stages. By analogy, only when the total effective operation long value TTA is greater than the purification life long value TB 50%, the red indicator light that needs to be changed by the particulate matter adsorption device 103 lights up, reaches the highest alarm level, indicates that the ability of the air purifier 100 to adsorb particulate matter is very poor, and the particulate matter adsorption device 103 needs to be changed urgently.
Further, when the user cleans or replaces the new particulate matter adsorbing device 103, the total effective operation long value TTA of the air purifier 100 may be set to zero, so that the air purifier 100 restarts counting the total effective operation long value TTA. The long value TTA in the total effective running is set to zero, and a certain key can be continuously pressed for more than 10 seconds for 2 times, or a reset button and the like are pressed by a tool, so that misoperation of a user is avoided.
The invention further provides an air purifier control device. The device is used for realizing the method.
Referring to fig. 4, fig. 4 is a functional block diagram of a control device of an air purifier according to a first embodiment of the present invention.
In one embodiment, the air purifier control apparatus includes: the device comprises a detection module 10, a determination module 20, a calculation module 30 and a prompt module 40.
The detection module 10 is used for detecting the current concentration of the particulate matters through the particulate matter sensor in the operation process of the air purifier;
the determining module 20 is configured to determine a particle weight value corresponding to the current particle concentration and a wind speed weight value corresponding to the current fan rotation speed;
in the present embodiment, referring to fig. 2, the air purifier 100 includes a blower 101, a controller 102, a particulate matter adsorbing device 103, and a particulate matter sensor 104, and the controller 102 includes a main chip 105, a memory 106, and a clock chip 107. When the air purifier 100 is operated, the fan 101 operates at different rotation speeds to suck air into the air purifier 100, the particle sensor 104 detects an initial particle concentration value K of the air sucked into the air purifier 100, and the particle adsorption device 103 adsorbs particles in the air flow. In the operation process of the air purifier 100, the current particulate matter concentration K is detected through the particulate matter sensor 104, and a particulate matter weight value WK corresponding to the current particulate matter concentration K and a wind speed weight value WF corresponding to the current fan rotating speed are obtained. The weight value of the particles is positively correlated with the concentration of the particles; the wind speed weight value is positively correlated with the rotating speed of the fan. Namely, the weight value WK of the particles is positively correlated with the concentration value K of the particles in the air, and when the concentration value K of the particles in the air is high, the corresponding weight value WK of the particles is large; when the concentration value K of the particulate matters in the air is low, the weight value WK of the corresponding particulate matters is small. Preferably, the particulate matter weight value WK is set as the ratio of the particulate matter concentration value K in air to a certain nominal particulate matter concentration value K0, WK being K/K0. The wind speed weight value WF is positively correlated with the fan rotating speed F, and when the fan rotating speed F is high, the corresponding wind speed weight value WF is large; when the rotating speed F of the fan is low, the corresponding wind speed weighted value WF is small. Preferably, the wind speed weight value WF is set to a ratio of the fan speed F to a rated speed F0 of the air cleaner 100, and WF is F/F0.
The calculation module 30 is configured to calculate a single operation duration of the air purifier according to the current particulate matter concentration, the particulate matter weight value, and the wind speed weight value, and calculate an accumulated operation duration of the air purifier according to the single operation duration calculated each time;
during the operation of the air purifier, the clock chip 107 records the current operation time TI of the air purifier at a certain wind speed and a certain particulate matter concentration. After the current particulate matter concentration, the particulate matter weight value and the wind speed weight value are obtained, calculating the single operation time length of the air purifier, wherein the single operation time length TZ is obtained by multiplying the current particulate matter weight value WK by the current wind speed weight value WF and then multiplying the current operation time length TI, namely, TZ is WK WF TI and is the effective operation time length under the current wind speed and the current particulate matter concentration. The single operating time TZ calculated each time is accumulated in the memory 106 to obtain the total effective operating time duration of the air purifier 100, i.e., the accumulated operating time duration TTA. In order to better control the operation process of the air purifier, the accumulated operation time length is an accumulated operation time length TTA in the accumulated operation period, specifically: acquiring all calculated single-time operation durations in a calculation period; and summing all the acquired single operation durations to calculate the accumulated operation duration of the air purifier, wherein the calculation period corresponds to an accumulated period.
And the prompting module 40 is configured to send out warning information of the particulate matter adsorption device when the accumulated running time is greater than a preset threshold value.
The preset threshold is a purification life duration value TB, that is, an effective filtration life duration value of the particulate adsorption device 103. The purification life time TB of the particulate matter adsorption device 103 is the purification life time corresponding to the particulate matter adsorption device 103 when the clean air amount of the air purifier 100 is reduced to 50% of the initial clean air amount. The purification life duration value is a purification life duration value TB calculated or tested based on the cumulative purification amount measured by the particulate matter adsorption device 103 of the air purifier 100, the room area to which the air purifier 100 is applied, the room ventilation rate, and the outdoor particulate matter having a certain specific concentration value. After the accumulated running time TTA is calculated, whether the TTA is greater than or equal to TB is judged, and when the TTA is greater than or equal to TB, warning information of the particulate matter adsorption device is sent out, wherein the warning information is a prompt or an alarm for replacing or cleaning the particulate matter adsorption device 103. The prompts or alerts include, but are not limited to, audible or light prompts, such as voice alerts, flashing lights or indicator lights, etc. When it is detected that the user has cleaned or replaced the particulate matter adsorbing device 103, the TTA of the air purifier 100 may be set to zero. The zero setting mode comprises the following steps: prompting a user to perform zero setting operation, wherein the user can continuously press a certain key for more than 10s or 5s for 2 times, or press a reset button and the like by means of a tool so as to avoid misoperation; or the clock chip 107 is automatically reset. If the cumulative operating time length TTA is smaller than the effective operating time length TB, the next cycle is entered, the particulate matter sensor 104 detects the particulate matter concentration value K in the air again, adopts the new particulate matter concentration value K and the new fan operating rotating speed value F, calculates a new effective operating time length TZ of this time and updates the total effective operating time length TTA and the like under the conditions of the particulate matter concentration and the fan rotating speed and the corresponding operating time length value. The update process may be: calculating a single effective runtime long value TZ, wherein TZ is WK and TI; then, the main chip 105 reads the total effective runtime long value TTA in the memory 106, and accumulates the calculated current effective runtime long value TZ into the total effective runtime long value TTA, that is: TTA new + TTA old + TZ.
This embodiment is through at air purifier air-purifying in-process, calculate according to particulate matter concentration, particulate matter weight and fan weight and obtain that an effectual air purifier's accumulative total operation is long, long suggestion is changed or washs particulate matter adsorption equipment according to this accumulative total operation, realize monitoring particulate matter adsorption equipment's state automatically, provide more accurate change or wash particulate matter adsorption equipment's suggestion, make accurate reasonable change or washing operation particulate matter adsorption equipment.
Referring to fig. 5, the prompt module 40 includes:
a calculating unit 41, configured to calculate a difference between the accumulated operating time and an operating time of a preset threshold;
and the prompting unit 42 is configured to determine an alarm level corresponding to the operation time difference, and send alarm information of the particulate matter adsorption device corresponding to the alarm level.
In the above embodiment, as long as the accumulated operating time is greater than or equal to the preset threshold, the warning message of the particulate matter adsorbing device 103 is sent to prompt the replacement or cleaning of the particulate matter adsorbing device 103. The difference between this embodiment and the first embodiment is: when the long value TTA exceeds the purification life time long value TB by a set level value a for the total effective operation of the air purifier 100, the prompt or alarm for replacing or cleaning the particulate matter adsorbing device 103 is increased by one level until the highest alarm level of the air purifier 100 is reached. Preferably, the grade value A is 10% of the purge life duration value. For example, when the purification life time TB is 1334 hours and the cumulative total effective operation time TTA of the air purifier 100 is greater than 1334 hours, a prompt is given to light up the green light for replacing the filter screen. At this time, although the clean air amount of the air purifier 100 is attenuated to 50% of the initial clean air amount, at this time, the air purifier 100 can purify the air even if the user does not immediately replace the particulate matter adsorption device 103, and only the purification effect is poor and the purification speed is slow, so the air purifier 100 gives a preliminary prompt or alarm to replace the particulate matter adsorption device 103. When the total effective operation time long value TTA is accumulated to 1467.5 hours, at this time, the total effective operation time long value TTA is 10% greater than the purification life time long value TB (1334 hours), the air purifier 100 changes from green light lighting to yellow-green light lighting, and the alarm for replacing the particulate matter adsorption device 103 is raised by one step. When the total effective operation long value TTA is cumulatively 1601 hours, the total effective operation long value TTA is 20% greater than the purification life time long value TB (1334 hours), and the air purifier 100 changes from lighting yellow green light to lighting yellow light, and the alarm accumulation for replacing the particulate matter adsorption device 103 is improved by two stages. By analogy, only when the total effective operation long value TTA is greater than the purification life long value TB 50%, the red indicator light that needs to be changed by the particulate matter adsorption device 103 lights up, reaches the highest alarm level, indicates that the ability of the air purifier 100 to adsorb particulate matter is very poor, and the particulate matter adsorption device 103 needs to be changed urgently. And when judging whether the accumulated running time length value TTA is larger than the effective life time length value TB by one or more grade values A, calculating intermediate datA S, wherein S is TTA-TB-A, then judging whether S is larger than zero, if S is larger than 0, indicating whether the total effective running time length value TTA is larger than the effective life time length value TB by at least one grade value A, at least increasing the prompting grade of the replacement particulate matter adsorption device 103 by one grade, then calculating S again to be S-A, and then judging whether S is larger than 0 again, thereby judging whether the prompting of the replacement particulate matter adsorption device 103 is further increased by one grade until the highest prompting grade, and repeating the steps. When S is less than zero, the concentration value K of the particulate matters in the air is detected again, a new effective operation time value TZ of this time is calculated, the total effective operation time value TTA is continuously updated and accumulated, and the process is repeated.
Referring to fig. 6, the apparatus further includes:
the judging module 50 is configured to judge whether the alarm level reaches a highest alarm level after determining the alarm level corresponding to the running time length difference;
and the control module 60 is used for controlling the air purifier to stop running when the highest alarm level is reached. By controlling the air purifier to stop running, the air purifier is ensured to be in a failure state, and the energy is saved. Preferably, after the alarm level corresponding to the running time difference is determined, the air purifier is controlled to run for a preset time (5 minutes or 10 minutes), and the air purifier is turned off.
The different warning levels of difference design that this embodiment corresponds accumulative running duration and is greater than preset threshold value send different prompt messages through warning the grade difference to audio-visual suggestion is changed or is washd particulate matter adsorption equipment's emergency degree, improves air purifier's use and experiences.
For a better description of the air purifier control process according to an embodiment of the present invention, reference is made to the following description:
when the air purifier 100 according to the embodiment of the present invention operates at a high wind rated rotational speed, the corresponding clean air amount is 300 cubic meters per hour, that is, 300 cubic meters of clean air can be provided per hour, and when the clean air amount of the air purifier 100 is tested to be attenuated to 50% of the initial clean air amount, the cumulative purification amount is 13000 milligrams, that is, after 13000 milligrams of particulates are adsorbed by the particulate adsorption device 103 of the air purifier 100, the clean air amount is attenuated to 150 cubic meters per hour from 300 cubic meters per hour. When the concentration of outdoor pollutants is 300 micrograms/cubic meter, the indoor ventilation rate is 0.6 times/hour, the indoor area is 29 square meters, the height of an indoor layer is 2.4 meters, the natural settling rate of particles is 0.2 times/hour, indoor particles are maintained in an excellent air quality state of 5 micrograms/cubic meter, after the purification operation is tested for 1 hour, the weight of dust adsorbed by the particle adsorption device 103 is 9.744 milligrams, and the primary purification efficiency of the particle adsorption device 103 is 95 percent, namely, when 100 micrograms of particles in the air pass through the particle adsorption device 103 once, 95 micrograms of particles can be adsorbed by the particle adsorption device 103, and only 5 micrograms of particles return to the air for circulation again. The calculation yields 32.48 micrograms of particulate matter adsorbed per cubic meter of air (9744/300-32.48), and the average concentration of particulate matter entering the air purifier 100 is 34.19 micrograms/cubic meter (32.48/0.95-34.19), which is defined as the nominal particulate matter concentration value K0 (i.e., setting K0-34.19 micrograms/cubic meter), calculated as the primary purification efficiency of the particulate matter adsorbing device 103 being 95%. When the air purifier 100 is in operation, the particulate matter sensor 104 detects that the particulate matter concentration K in the air is different, and has different particulate matter weight values WK, the particulate matter weight value WK is set to be the ratio of the particulate matter concentration value K in the air to the rated particulate matter concentration value K0, and WK is K/K0. When the concentration value K of the particulate matters in the air is high, the weight value WK of the corresponding particulate matters is large; when the concentration value K of the particulate matters in the air is low, the weight value WK of the corresponding particulate matters is small. For example, when the particulate matter sensor 104 detects that the particulate matter concentration K is 200 micrograms/cubic meter, the corresponding particulate matter weight WK is 200/34.19-5.85; for another example, when the pm sensor 104 detects that the pm concentration K is 120 μ g/cubic meter, the corresponding pm weight WK is 120/34.19 — 3.51.
The purification life duration value TB of the air purifier 100 was calculated to be 1334 hours (13000/9.744 being 1334 hours), and the rated rotation speed F0 of the air purifier 100 was set to a rotation speed at which the clean air amount was equal to 300 cubic meters per hour. Such as: the operating speed for this nominal state is 800 rpm. Set F0 to 800. The wind speed weight value WF is set to be the ratio of the fan speed F to the rated speed F0 of the air purifier 100 (F0 is 800 rpm), and WF is F/F0. When the rotating speed F of the fan is high, the corresponding wind speed weighted value WF is large; when the rotating speed F of the fan is low, the corresponding wind speed weighted value WF is small. For example, when the operating speed of the fan is 400 rpm, the corresponding wind speed weight value WF is 0.5, and when the operating speed of the fan is ultra high speed, 1100 rpm, the corresponding wind speed weight value WF is 1.375.
For example, when the air purifier 100 is shut down last time, the total effective operation duration TTA is 350 hours, this time, when the air purifier 100 starts to operate, the particulate matter sensor 104 detects that the particulate matter concentration K is 180 micrograms/cubic meter, the corresponding particulate matter weight WK is 180/34.19 is 5.26, the fan rotation speed F of the fan 101 at this time is 950 revolutions/minute, the corresponding wind speed weight WF is 950/800 is 1.1875, the clock chip 107700 tests that the air purifier 100 continuously operates for 0.25 hour under the particulate matter concentration K value and the fan rotation speed F, and the effective operation duration TZ at this stage is: when TZ is WK, WF, TI is 5.26, 1.1875, 0.25 is 1.562 hours, the master chip 105 integrates the current effective operation time length TZ (1.562 hours) into the memory 106, and the new total effective operation time length TTA is updated from the previous 350 hours to 351.562 hours. The above is only an example of a certain particulate matter concentration K value and a certain fan rotation speed F, actually, the particulate matter concentration changes at any time, the clock chip 107 calculates a time duration corresponding to each state at any time according to the change of the particulate matter concentration K and the fan rotation speed F, the time duration may be in units of seconds, the main chip 105 calculates a particulate matter weight value WK (WK ═ K/K0) corresponding to the weight according to the corresponding particulate matter concentration value K and calculates a wind speed weight value WF (WF ═ F/F0) corresponding to the fan rotation speed F value at any time, then calculates a corresponding effective operation time length value TZ, TZ ═ WK ═ WF TI, updates the total effective operation time length value TTA at any time, and writes the total effective operation time length value TTA into the memory 106 to be stored at any time.
Of course, the particulate matter concentration value K may be set to different sections, and the particulate matter concentrations in different sections may be set to a corresponding particulate matter concentration weight value, for example, when the particulate matter concentration value K is in the range of 80 micrograms/cubic meter to 100 micrograms/cubic meter, the intermediate particulate matter concentration value K may be taken as 90 micrograms/cubic meter, and the corresponding particulate matter weight value WK is set to 90/34.19 to 2.63; when the particulate matter concentration value K is in the interval of 50 micrograms/cubic meter to 80 micrograms/cubic meter, the intermediate particulate matter concentration value K may be 65 micrograms/cubic meter, the corresponding particulate matter weight value WK is set to 65/34.19 to 1.90, when the same particulate matter concentration interval is used, the clock chip 107 counts the operation time value T of the particulate matter concentration value interval together, and the main chip 105 calculates the corresponding effective operation time length value TZ according to the wind speed weight value WF, and accumulates the corresponding effective operation time length value TZ into the total effective operation time length value TTA, that is: the new total valid runtime long value TTA is obtained and updated to the memory 106 for the next time the master chip 105 reads.
When the integrated total effective operation long value TTA of the air purifier 100 is greater than the purification life long value TB (for example, TB is 1334 hours, TTA is 1334.1 hours), the air purifier 100 gives a prompt or alarm to replace or clean the particulate matter adsorption device 103. For example, when the particulate matter adsorbing device 103 is a blocking type filter device such as kpa, a prompt or an alarm for replacement is given, and when the particulate matter adsorbing device 103 is an electrostatic adsorption type filter device, a prompt for cleaning the filter device is given, so that a user can clean dust on the static adsorption device in time, and the particulate matter adsorption effect is not affected, or the service life of the electrostatic adsorption device is not affected. The prompt or alarm for replacing or cleaning the particulate matter adsorption device 103 is a sound prompt, a light prompt, or the like, for example, a voice alarm, a double flashing light, an indicator light on, or the like.
Further, an air purifier 100 of the above-described type is characterized in that, when the long value TTA exceeds the purification life time long value TB by a set level value a for the total effective operation of the air purifier 100, the prompt or alarm for replacing or cleaning the particulate matter adsorbing device 103 is increased by one step until the highest alarm level of the air purifier 100 is reached. Preferably, the grade value A is 10% of the purge life duration value. For example, when the purification life time TB is 1334 hours and the cumulative total effective operation time TTA of the air purifier 100 is greater than 1334 hours, a prompt is given to light up the green light for replacing the filter screen. At this time, although the clean air amount of the air purifier 100 is attenuated to 50% of the initial clean air amount, at this time, the air purifier 100 can purify the air even if the user does not immediately replace the particulate matter adsorption device 103, and only the purification effect is poor and the purification speed is slow, so the air purifier 100 gives a preliminary prompt or alarm to replace the particulate matter adsorption device 300. When the total effective operation time long value TTA is accumulated to 1467.5 hours, at this time, the total effective operation time long value TTA is 10% greater than the purification life time long value TB (1334 hours), the air purifier 100 changes from green light lighting to yellow-green light lighting, and the alarm for replacing the particulate matter adsorption device 103 is raised by one step. When the total effective operation long value TTA is cumulatively 1601 hours, the total effective operation long value TTA is 20% greater than the purification life time long value TB (1334 hours), and the air purifier 100 changes from lighting yellow green light to lighting yellow light, and the alarm accumulation for replacing the particulate matter adsorption device 103 is improved by two stages. By analogy, only when the total effective operation long value TTA is greater than the purification life long value TB 50%, the red indicator light that needs to be changed by the particulate matter adsorption device 103 lights up, reaches the highest alarm level, indicates that the ability of the air purifier 100 to adsorb particulate matter is very poor, and the particulate matter adsorption device 103 needs to be changed urgently.
Further, when the user cleans or replaces the new particulate matter adsorbing device 103, the total effective operation long value TTA of the air purifier 100 may be set to zero, so that the air purifier 100 restarts counting the total effective operation long value TTA. The long value TTA in the total effective running is set to zero, and a certain key can be continuously pressed for more than 10 seconds for 2 times, or a reset button and the like are pressed by a tool, so that misoperation of a user is avoided.
The invention also provides an air purifier, and the air purifier control device is used in the air purifier. The air purifier comprises a fan, a particulate matter adsorption device, a particulate matter sensor and other necessary hardware. This air purifier is through at air purifier air-purifying in-process, long according to particulate matter concentration, the long suggestion is changed or washs particulate matter adsorption equipment during the accumulative total operation that obtains an effectual air purifier is calculated to particulate matter weight value and fan weight value, realize monitoring particulate matter adsorption equipment's state automatically, provide more accurate change or wash particulate matter adsorption equipment's suggestion, make accurate reasonable change or washing operation particulate matter adsorption equipment.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A control method of an air purifier, the air purifier comprises a particulate matter adsorption device and a particulate matter sensor, and is characterized by comprising the following steps:
in the operation process of the air purifier, detecting the current particulate matter concentration through a particulate matter sensor, and determining a particulate matter weight value corresponding to the current particulate matter concentration and a wind speed weight value corresponding to the current fan rotating speed;
recording the current operation time length according to the current particulate matter concentration and the current fan rotating speed, and calculating to obtain the single operation time length of the air purifier according to the current operation time length, a particulate matter weight value and a wind speed weight value, wherein the particulate matter weight value WK is the ratio of the current particulate matter concentration value K to a rated particulate matter concentration value K0, WK is K/K0, the wind speed weight value WF is the ratio of the current wind speed value F to a rated wind speed value F0, and WF is F/F0, and the determination process of the rated particulate matter concentration value K0 comprises the following steps: when the concentration of outdoor pollutants is 300 micrograms/cubic meter, the indoor ventilation rate is 0.6 times/hour, the indoor area is 29 square meters, the height of an indoor layer is 2.4 meters, the natural settling rate of particulate matters is 0.2 times/hour, the indoor particulate matters are maintained in a state of 5 micrograms/cubic meter, after the test results show that the purified operation is carried out for 1 hour, the weight of dust adsorbed by the particulate matter adsorption device is 9.744 milligrams, the primary purification efficiency of the particulate matter adsorption device is 95 percent, namely, when 100 micrograms of particulate matters in the air pass through the particulate matter adsorption device at one time, 95 micrograms of particulate matters are adsorbed by the particulate matter adsorption device, only 5 micrograms of particulate matters return to the air for circulation again, 9744/300 micrograms per meter of air adsorbed particulate matters is calculated as 32.48 micrograms, and the primary purification efficiency of the particulate matter adsorption device is 95 percent, the average concentration of the particulate matters entering the air purifier is 32.48/0.95-34.19 micrograms/cubic meter, which is defined as a rated particulate matter concentration value K0, and the rated rotating speed F0 is the rotating speed of the clean air quantity equal to 300 cubic meters/hour;
calculating the accumulated operation time of the air purifier according to the single operation time calculated each time;
and sending out alarm information of the particulate matter adsorption device when the accumulated running time is longer than a preset threshold value.
2. The air purifier control method of claim 1, wherein the step of calculating the cumulative operating time period of the air purifier based on the single operating time period calculated each time comprises:
acquiring all calculated single-time operation durations in a calculation period;
and summing all the acquired single operation time lengths to calculate the accumulated operation time length of the air purifier.
3. The air purifier control method of claim 1, wherein the particulate matter weight value is positively correlated with particulate matter concentration; the wind speed weight value is positively correlated with the rotating speed of the fan.
4. The air cleaner control method according to any one of claims 1 to 3, wherein the step of issuing a warning message of the particulate matter adsorbing device includes:
calculating the running time difference between the accumulated running time and a preset threshold;
and determining an alarm level corresponding to the operation time difference, and sending alarm information of the particulate matter adsorption device corresponding to the alarm level.
5. The air purifier control method of claim 4, wherein the step of determining the warning level corresponding to the operating time period difference further comprises, after the step of determining the warning level corresponding to the operating time period difference:
judging whether the alarm level reaches the highest alarm level;
and when the highest alarm level is reached, controlling the air purifier to stop running.
6. An air purifier control apparatus, comprising:
the detection module is used for detecting the current concentration of the particulate matters through the particulate matter sensor in the operation process of the air purifier;
a determining module, configured to determine a particulate matter weight value corresponding to the current particulate matter concentration and a wind speed weight value corresponding to the current fan rotation speed, where WK is a ratio of the current particulate matter concentration value K to a rated particulate matter concentration value K0, WK is K/K0, WF is a ratio of the current wind speed value F to a rated wind speed value F0, and WF is F/F0, where the determination process of the rated particulate matter concentration value K0 includes: when the concentration of outdoor pollutants is 300 micrograms/cubic meter, the indoor ventilation rate is 0.6 times/hour, the indoor area is 29 square meters, the height of an indoor layer is 2.4 meters, the natural settling rate of particulate matters is 0.2 times/hour, the indoor particulate matters are maintained in a state of 5 micrograms/cubic meter, after the test results show that the purified operation is carried out for 1 hour, the weight of dust adsorbed by the particulate matter adsorption device is 9.744 milligrams, the primary purification efficiency of the particulate matter adsorption device is 95 percent, namely, when 100 micrograms of particulate matters in the air pass through the particulate matter adsorption device at one time, 95 micrograms of particulate matters are adsorbed by the particulate matter adsorption device, only 5 micrograms of particulate matters return to the air for circulation again, 9744/300 micrograms per meter of air adsorbed particulate matters is calculated as 32.48 micrograms, and the primary purification efficiency of the particulate matter adsorption device is 95 percent, the average concentration of the particulate matters entering the air purifier is 32.48/0.95-34.19 micrograms/cubic meter, which is defined as a rated particulate matter concentration value K0, and the rated rotating speed F0 is the rotating speed of the clean air quantity equal to 300 cubic meters/hour;
the calculation module is used for recording the current operation time length according to the current particulate matter concentration and the current fan rotating speed, and calculating the single operation time length of the air purifier according to the current operation time length, the particulate matter weight value and the wind speed weight value; calculating the accumulated operation time of the air purifier according to the single operation time calculated each time;
and the prompt module is used for sending out alarm information of the particulate matter adsorption device when the accumulated running time is longer than a preset threshold value.
7. The air purifier control apparatus of claim 6 wherein the calculation module is further configured to obtain all of the calculated single run lengths during a calculation cycle; and summing all the acquired single operation time lengths to calculate the accumulated operation time length of the air purifier.
8. The air purifier control apparatus of claim 6 wherein the particulate matter weight value is positively correlated with particulate matter concentration; the wind speed weight value is positively correlated with the rotating speed of the fan.
9. The air purifier control apparatus of any one of claims 6 to 8, wherein the prompt module comprises:
the calculating unit is used for calculating the difference value of the accumulated running time length and the running time length of a preset threshold;
and the prompting unit is used for determining the alarm level corresponding to the running time difference value and sending alarm information of the particulate adsorption device corresponding to the alarm level.
10. The air cleaner control apparatus of claim 9, further comprising:
the judging module is used for judging whether the alarm level reaches the highest alarm level;
and the control module is used for controlling the air purifier to stop running when the highest alarm level is reached.
CN201610630100.1A 2016-08-03 2016-08-03 Air purifier control method and device Active CN106247532B (en)

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