CN114909753A - Air purifier, and control method and device of air purifier - Google Patents

Air purifier, and control method and device of air purifier Download PDF

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Publication number
CN114909753A
CN114909753A CN202210730085.3A CN202210730085A CN114909753A CN 114909753 A CN114909753 A CN 114909753A CN 202210730085 A CN202210730085 A CN 202210730085A CN 114909753 A CN114909753 A CN 114909753A
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detection data
formaldehyde
dust
value
data set
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CN114909753B (en
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曹艺
邓文泰
阮家俊
张子月
周炫
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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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
    • F24F7/00—Ventilation
    • F24F7/003—Ventilation in combination with air cleaning
    • 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
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/95—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying specially adapted for specific purposes
    • 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
    • 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
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/66—Volatile organic compounds [VOC]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Ventilation (AREA)

Abstract

The invention discloses an air purifier, a control method and a control device of the air purifier, wherein the control method of the air purifier comprises the following steps: acquiring a first dust detection data set in a preset first time period; acquiring a first formaldehyde detection data set in the first time period; determining an initial air quality rating for the first time period from the first dust detection data set and the first formaldehyde detection data set; and determining the fan rotating speed of the air purifier according to the initial air quality grade. According to the method, the initial air quality grade is determined by comprehensively considering the results of dust detection and formaldehyde detection, and further the fan rotating speed of the air purifier is obtained, namely, the comprehensive quality of the dust and the formaldehyde is used as the control basis of the air purifier, so that the rationality and the purification efficiency of the air quality detection can be improved.

Description

Air purifier, and control method and device of air purifier
Technical Field
The invention relates to the technical field of electrical equipment, in particular to an air purifier, and a control method and device of the air purifier.
Background
The scientific and technological development brings great convenience to our lives, but also brings certain pollution sources, and the air purifier gradually enters the daily work and life of people. And only single pollution sources purification ability air purifier has can't satisfy consumer's demand, possesses multiple means of purifying and can realize the air purifier of multiple pollution sources purification and come into existence.
Disclosure of Invention
In view of this, embodiments of the present invention provide an air purifier, and a control method and device for the air purifier, so as to control the air purifier capable of purifying multiple pollution sources.
The embodiment of the invention provides a control method of an air purifier, which comprises the following steps: acquiring a first dust detection data set in a preset first time period; acquiring a first formaldehyde detection data set in the first time period; determining an initial air quality rating for the first time period from the first dust detection data set and the first formaldehyde detection data set; and determining the fan rotating speed of the air purifier according to the initial air quality grade.
Specifically, the determining the initial air quality level in the first time period according to the first dust detection data set and the first formaldehyde detection data set includes: determining an initial dust quality grade according to the first dust detection data set in the first time period; determining an initial quality grade of formaldehyde according to a first formaldehyde detection data set in the first time period; when the difference value between the initial dust quality grade and the initial formaldehyde quality grade is larger than a preset grade threshold value, taking a compromise grade of the initial dust quality grade and the initial formaldehyde quality grade as the initial air quality grade; when the difference value between the dust initial quality grade and the formaldehyde initial quality grade is smaller than a grade threshold value, taking the poorer grade of the dust initial quality grade and the formaldehyde initial quality grade as the initial air quality grade; and when the initial quality grade of the dust is the same as the initial quality grade of the formaldehyde, taking the initial quality grade of the dust as the initial air quality grade.
Specifically, the determining the dust quality grade according to the first dust detection data set in the first time period includes: respectively determining the dust quality grade of each first dust detection data in the first dust detection data set in the first time period; counting the quantity of each dust quality grade, and taking the dust quality grade with the largest quantity as the initial dust quality grade; and/or, determining an initial quality level of formaldehyde from the first formaldehyde detection dataset over the first time period comprises: respectively determining the formaldehyde quality grade of each first formaldehyde detection data in the first formaldehyde detection data set in the first time period; and counting the quantity of each formaldehyde quality grade, and taking the formaldehyde quality grade with the largest quantity as the initial formaldehyde quality grade.
Further, after determining the fan speed of the air purifier according to the initial air quality level, the control method of the air purifier further comprises the following steps: acquiring a second detection data set in a preset second time period, wherein the second detection data set comprises dust detection data; selecting a maximum dust value and a minimum dust value in the first dust detection data set; adjusting the rotating speed of the fan according to the second detection data set, the maximum dust value and the minimum dust value; or acquiring a third detection data set in a preset second time period, wherein the third detection data set comprises formaldehyde detection data; selecting a maximum formaldehyde value and a minimum formaldehyde value in the first formaldehyde detection data set; adjusting the rotating speed of the fan according to the third detection data set, the maximum formaldehyde value and the minimum formaldehyde value; or acquiring a fourth detection data set in a preset second time period, wherein the fourth detection data set comprises the dust detection data and the formaldehyde detection data; and adjusting the rotating speed of the fan according to the fourth detection data set, the maximum value of the dust, the minimum value of the dust, the maximum value of the formaldehyde and the minimum value of the formaldehyde.
Specifically, adjusting the fan rotation speed according to the second detection data set, the maximum dust value, and the minimum dust value includes: judging whether the dust detection data in the second detection data set is larger than the maximum dust value or smaller than the minimum dust value; counting a first number of detection data larger than the maximum value of the dust and a second number of detection data smaller than the minimum value of the dust; adjusting the rotating speed of the fan according to the first dust comparison data, wherein the first dust comparison data comprise a first quantity and/or a second quantity; or, adjusting the fan rotation speed according to the third detection data set, the maximum formaldehyde value, and the minimum formaldehyde value includes: judging whether the formaldehyde detection data in the third detection data set is larger than the maximum value of formaldehyde or not and smaller than the minimum value of formaldehyde or not; counting a third quantity of detection data larger than the maximum value of the formaldehyde and a fourth quantity of detection data smaller than the minimum value of the formaldehyde; adjusting the rotating speed of the fan according to the first formaldehyde comparison data, wherein the first formaldehyde comparison data comprise a third quantity and/or a fourth quantity; or, the adjusting the fan rotation speed according to the fourth detection data set, the maximum dust value, the minimum dust value, the maximum formaldehyde value, and the minimum formaldehyde value includes: determining whether the detection data belongs to the dust detection data or the formaldehyde detection data for any detection data in the fourth detection data set; when the detection data belong to the dust detection data, judging whether the detection data are larger than the maximum value of the dust and smaller than the minimum value of the dust; when the detection data belong to the formaldehyde detection data, judging whether the detection data are larger than the maximum value of formaldehyde and smaller than the minimum value of formaldehyde; traversing all the detection data in the fourth detection data set, and respectively counting a fifth quantity of the detection data larger than the maximum value of the dust, a sixth quantity of the detection data smaller than the minimum value of the dust, a seventh quantity of the detection data larger than the maximum value of the formaldehyde and an eighth quantity of the detection data smaller than the minimum value of the formaldehyde; and adjusting the rotating speed of the fan according to second dust comparison data and second formaldehyde comparison data, wherein the second dust comparison data comprise a fifth quantity and/or a sixth quantity, and the second formaldehyde comparison data comprise a seventh quantity and/or an eighth quantity.
Specifically, the adjusting the fan rotating speed according to the first dust comparison data comprises: selecting a higher value of the first quantity and the second quantity to obtain a first adjustment reference value; adjusting the rotating speed of the fan according to the first adjustment reference value; or, the adjusting the rotating speed of the fan according to the first formaldehyde comparison data comprises; selecting a higher value of the third quantity and the fourth quantity to obtain a second adjustment reference value; adjusting the rotating speed of the fan according to the second adjustment reference value; or, the adjusting the rotating speed of the fan according to the second dust comparison data and the second formaldehyde comparison data comprises: selecting a higher value of the fifth quantity and the sixth quantity to obtain a third adjustment reference value, and determining a dust variation tendency corresponding to the third adjustment reference value; selecting a higher value of the seventh quantity and the eighth quantity to obtain a fourth adjustment reference value; determining a formaldehyde change tendency corresponding to the fourth adjustment reference value; and when the dust change tendency is the same as the formaldehyde change tendency, selecting a higher value of the third adjustment reference value and the fourth adjustment reference value to obtain a fifth adjustment reference value, and adjusting the rotating speed of the fan according to the fifth adjustment reference value.
Specifically, the adjusting the rotating speed of the fan according to the first adjustment reference value includes:
judging whether the first adjustment reference value is larger than a preset first threshold value or not; when the first adjustment reference value is larger than the first threshold value, judging whether the first adjustment reference value is smaller than a preset second threshold value; when the first adjustment reference value is smaller than the second threshold value, adjusting the rotating speed of the fan by a preset first speed value; when the first adjustment reference value is larger than or equal to the second threshold value, adjusting the initial air quality grade by one grade, and adjusting the rotating speed of the fan to be corresponding to the adjusted initial air quality grade; or, the adjusting the rotating speed of the fan according to the second adjusting reference value comprises: judging whether the second adjustment reference value is larger than a preset third threshold value or not; when the second adjustment reference value is larger than the third threshold, judging whether the second adjustment reference value is smaller than a preset fourth threshold; when the second adjustment reference value is smaller than the fourth threshold value, adjusting the rotating speed of the fan by a preset second speed value; when the second adjustment reference value is larger than or equal to the fourth threshold value, adjusting the initial air quality grade by one grade, and adjusting the rotating speed of the fan to be corresponding to the adjusted initial air quality grade; or, the adjusting the rotating speed of the fan according to the fifth adjusting reference value comprises: judging whether the fifth adjustment reference value is larger than a preset fifth threshold value or not; when the fifth adjustment reference value is larger than the fifth threshold, judging whether the fifth adjustment reference value is smaller than a preset sixth threshold; when the fifth adjustment reference value is smaller than the sixth threshold value, adjusting the rotating speed of the fan by a preset third speed value; and when the fifth adjustment reference value is larger than or equal to the sixth threshold value, adjusting the initial air quality grade by one grade, and adjusting the rotating speed of the fan to be corresponding to the adjusted initial air quality grade.
The embodiment of the invention also provides a control device of the air purifier, which comprises a first acquisition module, a second acquisition module, a processing module and an adjusting module, wherein the first acquisition module is used for acquiring a first dust detection data set in a preset first time period; the second acquisition module is used for acquiring a first formaldehyde detection data set in the first time period; the processing module is used for determining an initial air quality grade in the first time period according to the first dust detection data set and the first formaldehyde detection data set; and the adjusting module is used for determining the fan rotating speed of the air purifier according to the initial air quality grade.
The embodiment of the invention also provides an air purifier, which comprises a dust sensor, a formaldehyde sensor and a controller, wherein the dust sensor is used for acquiring dust detection data; the formaldehyde sensor is used for acquiring formaldehyde detection data; the dust sensor, the formaldehyde sensor and the controller are in communication connection with one another, a computer instruction is stored in the controller, and the controller executes the computer instruction, so that the control method of the air purifier is executed.
Embodiments of the present invention also provide a computer-readable storage medium storing computer instructions for causing the computer to execute the control method of the air purifier.
According to the air purifier, the control method and the control device of the air purifier, provided by the embodiment of the invention, the initial air quality grade is determined by comprehensively considering the results of dust detection and formaldehyde detection, and further the fan rotating speed of the air purifier is obtained, namely, the comprehensive quality of the dust and the formaldehyde is used as the control basis of the air purifier, so that the rationality of air quality detection and the purification efficiency can be improved.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 is a schematic flow chart showing a control method of an air cleaner in embodiment 1 of the present invention;
fig. 2 is a schematic flowchart of an example of a control method of an air cleaner according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of an air purifier control device in embodiment 2 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
Example 1
The embodiment 1 of the invention provides a control method of an air purifier. As shown in fig. 1, the control method of the air cleaner of embodiment 1 of the present invention includes the steps of:
s101: a first dust detection data set is acquired over a preset first time period.
In particular, a first dust detection data set over a first time period can be acquired by a dust sensor.
S102: a first formaldehyde detection dataset is obtained over the first time period.
In particular, a first formaldehyde detection dataset over a first time period may be acquired by a formaldehyde sensor.
Specifically, the first time period may be determined according to the performance of the dust sensor and the formaldehyde sensor, and for example, the first time period may be 10 to 30 seconds. One or more dust detection data, one or more formaldehyde detection data may be acquired during the first time period. That is, the first dust detection data set includes one or more dust detection data and the first formaldehyde detection data set includes one or more formaldehyde detection data.
S103: determining an initial air quality rating for the first time period based on the first dust detection data set and the first formaldehyde detection data set.
Specifically, the following technical scheme may be adopted for determining the initial air quality grade in the first time period according to the first dust detection data set and the first formaldehyde detection data set: determining an initial dust quality grade according to the first dust detection data set in the first time period; determining an initial quality level of formaldehyde from a first formaldehyde detection data set over the first time period; when the difference value between the initial dust quality grade and the initial formaldehyde quality grade is larger than a preset grade threshold value, taking a compromise grade of the initial dust quality grade and the initial formaldehyde quality grade as the initial air quality grade; when the difference value between the dust initial quality grade and the formaldehyde initial quality grade is smaller than a grade threshold value, taking the poorer grade of the dust initial quality grade and the formaldehyde initial quality grade as the initial air quality grade; and when the initial quality grade of the dust is the same as the initial quality grade of the formaldehyde, taking the initial quality grade of the dust as the initial air quality grade.
For example, when the air quality level is classified into three levels, and the difference between the dust initial quality level and the formaldehyde initial quality level is greater than or equal to 2 levels, the difference between the dust initial quality level and the formaldehyde initial quality level is considered to be large, and a compromise level is taken as the initial air quality level; and when the difference between the dust initial quality grade and the formaldehyde initial quality grade is less than 2 grades, considering that the difference between the dust initial quality grade and the formaldehyde initial quality grade is smaller, and taking the poor grade of the dust initial quality grade and the formaldehyde initial quality grade as the initial air quality grade. For example, the compromise may be understood as taking an intermediate value between the dust initial quality grade and the formaldehyde initial quality grade, assuming that the intermediate value between the two grades is 1, taking the intermediate value as the initial air quality grade, for example, dividing the intermediate value into a good grade, a good grade and a poor grade, and taking the good grade as the initial air quality grade when the dust initial quality grade is good and the formaldehyde initial quality grade is poor; assuming that the intermediate value between the two grades is two, one of the two intermediate values is taken as the initial air quality grade, for example, when the four grades are divided into a high grade, a good grade and a poor grade, when the initial quality grade of the dust is the high grade and the initial quality grade of the formaldehyde is the poor grade, the good grade is taken as the initial air quality grade. That is, when the intermediate value is two, the worse of the two is taken as the initial air quality level.
More specifically, the following technical solution may be adopted to determine the dust quality grade according to the first dust detection data set in the first time period: respectively determining the dust quality grade of each first dust detection data set in the first time; and counting the quantity of each dust quality grade, and taking the dust quality grade with the largest quantity as the initial dust quality grade.
More specifically, the following technical scheme may be adopted to determine the initial quality level of formaldehyde according to the first formaldehyde detection data set in the first time period: respectively determining the formaldehyde quality grade of each first formaldehyde detection data set in the first time; and counting the quantity of each formaldehyde quality grade, and taking the formaldehyde quality grade with the largest quantity as the initial formaldehyde quality grade.
S104: and determining the fan rotating speed of the air purifier according to the initial air quality grade.
According to the control method of the air purifier provided by the embodiment of the invention, the initial air quality grade is determined by comprehensively considering the results of dust detection and formaldehyde detection, and further the fan rotating speed of the air purifier is obtained, namely, the comprehensive quality of the dust and the formaldehyde is used as the control basis of the air purifier, so that the rationality of air quality detection and the purification efficiency can be improved.
As a first further embodiment, after determining the fan speed of the air purifier according to the initial air quality level, the method further comprises: acquiring a second detection data set in a preset second time period, wherein the second detection data set comprises dust detection data; selecting a maximum dust value and a minimum dust value in the first dust detection data set; and adjusting the rotating speed of the fan according to the second detection data set, the maximum value of the dust and the minimum value of the dust.
For example, the second time period can be 5 to 20 seconds.
That is, the fan speed is adjusted according to the dust detection data. Specifically, the following technical scheme can be adopted for adjusting the rotating speed of the fan according to the second detection data set, the maximum dust value and the minimum dust value: judging whether the dust detection data in the second detection data set is larger than the maximum dust value or smaller than the minimum dust value; counting a first number of detection data larger than the maximum value of the dust and a second number of detection data smaller than the minimum value of the dust; and adjusting the rotating speed of the fan according to the first dust comparison data, wherein the first dust comparison data comprise a first quantity and/or a second quantity.
More specifically, the following technical scheme can be adopted for adjusting the rotating speed of the fan according to the first dust comparison data: selecting a higher value of the first quantity and the second quantity to obtain a first adjustment reference value; and adjusting the rotating speed of the fan according to the first adjustment reference value.
Wherein, the adjusting the fan rotating speed according to the first adjusting reference value comprises: judging whether the first adjustment reference value is larger than a preset first threshold value or not; when the first adjustment reference value is larger than the first threshold value, judging whether the first adjustment reference value is smaller than a preset second threshold value; when the first adjustment reference value is smaller than the second threshold value, adjusting the rotating speed of the fan by a preset first speed value; and when the first adjustment reference value is larger than or equal to the second threshold value, adjusting the initial air quality grade by one grade, and adjusting the rotating speed of the fan to be corresponding to the adjusted initial air quality grade.
For example, the first threshold may be 0, and the second threshold may be half the number of dust detection data in the second detection data set.
As a second further embodiment, after determining the fan speed of the air purifier based on the initial air quality level, the method further comprises: acquiring a third detection data set in a preset second time period, wherein the third detection data set comprises formaldehyde detection data; selecting a maximum formaldehyde value and a minimum formaldehyde value in the first formaldehyde detection data set; and adjusting the rotating speed of the fan according to the third detection data set, the maximum formaldehyde value and the minimum formaldehyde value.
That is, the fan speed is adjusted according to the formaldehyde detection data. Specifically, the following technical scheme can be adopted for adjusting the rotating speed of the fan according to the third detection data set, the maximum formaldehyde value and the minimum formaldehyde value: judging whether the formaldehyde detection data in the third detection data set is larger than the maximum value of formaldehyde or not and smaller than the minimum value of formaldehyde or not; counting a third quantity of detection data larger than the maximum value of the formaldehyde and a fourth quantity of detection data smaller than the minimum value of the formaldehyde; and adjusting the rotating speed of the fan according to the first formaldehyde comparison data, wherein the first formaldehyde comparison data comprise a third quantity and/or a fourth quantity.
More specifically, the following technical scheme can be adopted for adjusting the rotating speed of the fan according to the first formaldehyde comparison data: selecting a higher value of the third quantity and the fourth quantity to obtain a second adjustment reference value; and adjusting the rotating speed of the fan according to the second adjustment reference value.
Wherein, the adjusting the rotating speed of the fan according to the second adjusting reference value comprises: judging whether the second adjustment reference value is larger than a preset third threshold value or not; when the second adjustment reference value is larger than the third threshold, judging whether the second adjustment reference value is smaller than a preset fourth threshold; when the second adjustment reference value is smaller than the fourth threshold value, adjusting the rotating speed of the fan by a preset second speed value; and when the second adjustment reference value is larger than or equal to the fourth threshold value, adjusting the initial air quality grade by one grade, and adjusting the rotating speed of the fan to be corresponding to the adjusted initial air quality grade.
For example, the third threshold may be 0, and the fourth threshold may be half the amount of formaldehyde detection data in the third detection data set.
As a third further embodiment, after determining the fan speed of the air purifier based on the initial air quality level, the method further comprises: acquiring a fourth detection data set in a preset second time period, wherein the fourth detection data set comprises the dust detection data and the formaldehyde detection data; selecting a maximum dust value and a minimum dust value in the first dust detection data set, and selecting a maximum formaldehyde value and a minimum formaldehyde value in the first formaldehyde detection data set; and adjusting the rotating speed of the fan according to the fourth detection data set, the maximum value of the dust, the minimum value of the dust, the maximum value of the formaldehyde and the minimum value of the formaldehyde.
That is to say, adjust the fan rotational speed according to dust detection data and formaldehyde detection data simultaneously. Specifically, the following technical scheme can be adopted for adjusting the rotating speed of the fan according to the fourth detection data set, the maximum dust value, the minimum dust value, the maximum formaldehyde value and the minimum formaldehyde value: determining whether the detection data belongs to the dust detection data or the formaldehyde detection data for any detection data in the fourth detection data set; when the detection data belong to the dust detection data, judging whether the detection data are larger than the maximum value of the dust and smaller than the minimum value of the dust; when the detection data belong to the formaldehyde detection data, judging whether the detection data are larger than the maximum value of formaldehyde and smaller than the minimum value of formaldehyde; traversing all the detection data in the fourth detection data set, and respectively counting a fifth number of the detection data larger than the maximum value of the dust, a sixth number of the detection data smaller than the minimum value of the dust, a seventh number of the detection data larger than the maximum value of the formaldehyde and an eighth number of the detection data smaller than the minimum value of the formaldehyde; and adjusting the rotating speed of the fan according to second dust comparison data and second formaldehyde comparison data, wherein the second dust comparison data comprise a fifth quantity and/or a sixth quantity, and the second formaldehyde comparison data comprise a seventh quantity and/or an eighth quantity.
More specifically, the following technical scheme can be adopted for adjusting the rotating speed of the fan according to the second dust comparison data and the second formaldehyde comparison data: selecting a higher value of the fifth quantity and the sixth quantity to obtain a third adjustment reference value, and determining a dust variation tendency corresponding to the third adjustment reference value; selecting a higher value of the seventh quantity and the eighth quantity to obtain a fourth adjustment reference value; determining a formaldehyde change tendency corresponding to the fourth adjustment reference value; when the dust change tendency is the same as the formaldehyde change tendency, selecting a higher value of the third adjustment reference value and the fourth adjustment reference value to obtain a fifth adjustment reference value, and adjusting the rotating speed of the fan according to the fifth adjustment reference value; when the dust change tendency and the formaldehyde change tendency are different, the initial air quality grade is maintained unchanged.
Specifically, a higher value of the fifth amount and the sixth amount is selected to obtain a third adjustment reference value, and the dust change tendency corresponding to the third adjustment reference value is determined to be: if the fifth amount is higher, it is considered that the dust change tends to progress toward the dust increase; if the sixth amount is higher, it is considered that the dust change tends to progress toward less dust.
Similarly, a higher value of the seventh quantity and the eighth quantity is selected to obtain a fourth adjustment reference value; and determining the formaldehyde change tendency corresponding to the fourth adjustment reference value may be understood as: if the seventh amount is higher, it is considered that the formaldehyde change tends to become more formaldehyde; if the eighth amount is higher, it is considered that the formaldehyde change tends to progress toward less formaldehyde.
That is, when the change trends of the dust and the formaldehyde are the same in the second time period, the rotating speed of the fan is controlled according to the relatively large change; when the trend of the dust and formaldehyde is different in the second time period, the initial air quality level is kept unchanged.
Wherein, the adjusting the fan rotating speed according to the fifth adjusting reference value comprises: judging whether the fifth adjustment reference value is larger than a preset fifth threshold value or not; when the fifth adjustment reference value is larger than the fifth threshold, judging whether the fifth adjustment reference value is smaller than a preset sixth threshold; when the fifth adjustment reference value is smaller than the sixth threshold value, adjusting the rotating speed of the fan by a preset third speed value; and when the fifth adjustment reference value is larger than or equal to the sixth threshold value, adjusting the initial air quality grade by one grade, and adjusting the rotating speed of the fan to be corresponding to the adjusted initial air quality grade.
For example, the fifth threshold may be 0, and the sixth threshold may be half of the number of dust detection data in the fourth detection data set, or half of the number of formaldehyde detection data in the fourth detection data set.
Specifically, according to the difference of the fifth adjustment reference value, the following four cases can be classified:
(1) the fifth adjustment reference value is a first number of detection data which are larger than the maximum dust value in the fourth detection data set, and when the first number is larger than 0 and smaller than half of the number of the dust detection data in the fourth detection data set, the rotating speed of the fan is increased by a preset third speed value; when the first quantity is more than half of the quantity of the dust detection data in the fourth detection data set, the initial air quality grade is adjusted by one grade, and the rotating speed of the fan is adjusted to correspond to the adjusted initial air quality grade;
(2) the fifth adjustment reference value is a second number of detection data which are smaller than the minimum value of the dust in the fourth detection data set, and when the second number is larger than 0 and smaller than half of the number of the dust detection data in the fourth detection data set, the rotating speed of the fan is reduced by a preset third speed value; when the second quantity is more than half of the quantity of the dust detection data in the fourth detection data set, the initial air quality grade is adjusted by one grade, and the rotating speed of the fan is adjusted to correspond to the adjusted initial air quality grade;
(3) a fifth adjustment reference value is a third number of the detection data, which are larger than the maximum value of the formaldehyde, in the fourth detection data set, and when the third number is larger than 0 and is smaller than half of the number of the formaldehyde detection data in the fourth detection data set, the rotating speed of the fan is increased by a preset third speed value; when the third quantity is more than half of the quantity of the formaldehyde detection data in the fourth detection data set, the initial air quality grade is adjusted by one grade, and the rotating speed of the fan is adjusted to be corresponding to the adjusted initial air quality grade;
(4) the fifth adjustment reference value is a fourth quantity of the detection data which are smaller than the minimum value of the formaldehyde in the fourth detection data set, and when the fourth quantity is larger than 0 and smaller than half of the quantity of the formaldehyde detection data in the fourth detection data set, the rotating speed of the fan is reduced by a preset third speed value; and when the fourth quantity is more than half of the quantity of the formaldehyde detection data in the fourth detection data set, adjusting the initial air quality grade by one grade, and adjusting the rotating speed of the fan to be corresponding to the adjusted initial air quality grade.
To explain the control method of the air cleaner of embodiment 1 of the present invention in more detail, a specific example is given. This example mainly demonstrates that dust and formaldehyde concentration detection are combined in the air purifier working process and comprehensive air quality grade is judged to carry out the fan rotational speed that the grade adjustment operation is suitable. The corresponding relationship between the dust and formaldehyde concentration ranges and the air quality grade and the wind speed is shown in table 1. (three levels are referenced herein and multiple levels ranges can be set according to specific needs)
TABLE 1 dust and formaldehyde concentration ranges and air quality grade to wind speed relationship
Air quality rating Superior food Good wine Difference (D)
Dust concentration 0～c p1 c p1 +1～c p2 c p2 Above
Concentration of Formaldehyde 0～c f1 c f1 +1～c f2 c f2 The above
Wind speed v Is low with v In v Height of
Recommended values of the parameters are as follows:
startup detection time t First stage The time can be 10-30 s, which is determined by the performance of the sensor;
the running time T can be 5-20 s, and can be specifically adjusted according to the detection requirement precision;
adjusting the wind speed v 1 The air speed can be adjusted to be 5-30 r/min, and the air speed can be adjusted according to the difference between the corresponding air speeds of different air quality grades.
And judging the grades of the detected formaldehyde and dust concentrations according to respective air quality ranges, selecting a poor grade as a comprehensive air quality grade, taking a compromise grade as the comprehensive air quality grade if the grade difference between the formaldehyde and the dust concentration is large, and then adjusting the wind speed of the fan along with the comprehensive air quality grade. And after the operation is carried out for T time, judging the comprehensive air quality grade again and adjusting the air speed. The specific implementation process is as follows:
1. comprehensive air quality grade determination
After the machine is started up every time, the dust and formaldehyde concentrations are firstly detected within a period of time t, and the dust and formaldehyde concentrations within the time are judged to be at the most level, so that the dust and formaldehyde air quality levels are used. And then comparing the grades of the dust and the formaldehyde, taking the compromise grade as the initial comprehensive air quality grade if the difference is larger, and otherwise, selecting the poor grade as the initial comprehensive air quality grade. And finally, switching the rotating speed of the fan to the wind speed corresponding to the initial comprehensive air quality grade for operation.
2. Concentration change treatment process
The time T is run and the dust concentration and formaldehyde concentration during the time T are recorded, after which the changes in dust concentration and formaldehyde concentration are compared:
if any detected concentration value is higher than the highest value of the comprehensive air quality grade before T time, the comprehensive air quality grade is unchanged, and the wind speed is increased by v 1 ；
If any detected concentration value is lower than the lowest value of the comprehensive air quality grade before T time, the comprehensive air quality grade is unchanged, and the wind speed is reduced by v 1 ；
If more than half of the detected concentration value is higher than the highest value of the comprehensive air quality grade before T time, the comprehensive air quality is raised by one grade, and the wind speed is directly switched to the corresponding wind speed of the corresponding grade to operate;
if more than half of the detected concentration value is lower than the lowest value of the comprehensive air quality grade before T time, the comprehensive air quality is reduced by one grade, and the wind speed is directly switched to the corresponding wind speed of the corresponding grade to operate;
fifthly, if the dust and formaldehyde concentrations are in the same air quality grade or the detected concentrations are reduced and increased, the comprehensive air quality grade is unchanged, and the wind speed is unchanged.
Thereafter, the concentration change process is cyclically performed at intervals of time T.
Therefore, the control method of the air purifier provided by the embodiment 1 of the invention has the following advantages:
1. the conventional practice that the intelligent regulation and control mode of the single-sensor air purifier is only based on the detection value of the sensor to regulate the wind speed within a certain range is broken. A plurality of sensors are adopted to detect dust and formaldehyde values which are common pollution sources in life, and the rotating speed of the fan is adjusted stage by combining two air quality changes, so that the condition of resource waste caused by excessive purification amount is better avoided.
2. In order to meet the intelligent control requirement for purifying complex polluted environments, the dust concentration and the formaldehyde concentration are respectively judged and certain air quality grade range division is carried out, the change condition of the dust concentration and the formaldehyde concentration is monitored in real time, the comprehensive quality is extracted to serve as an intelligent control basis, and the rationality and the purification efficiency of air quality detection are improved.
Example 2
Embodiment 2 of the present invention provides a control device for an air cleaner, corresponding to embodiment 1 of the present invention. As shown in fig. 3, the control device of the air purifier according to embodiment 2 of the present invention includes a first obtaining module 20, a second obtaining module 21, a processing module 22, and an adjusting module 23.
Specifically, the first obtaining module 20 is configured to obtain a first dust detection data set in a preset first time period;
a second obtaining module 21, configured to obtain a first formaldehyde detection data set in the first time period;
a processing module 22 for determining an initial air quality level over the first time period from the first dust detection data set and the first formaldehyde detection data set;
and the adjusting module 23 is used for determining the fan rotating speed of the air purifier according to the initial air quality grade.
Further, after determining the fan speed of the air purifier according to the initial air quality level, the adjusting module 23 is further configured to: acquiring a second detection data set in a preset second time period, wherein the second detection data set comprises dust detection data and/or formaldehyde detection data; selecting a maximum dust value and a minimum dust value in the first dust detection data set and a maximum formaldehyde value and a minimum formaldehyde value in the first formaldehyde detection data set; and adjusting the rotating speed of the fan according to the second detection data set, the maximum value of the dust, the minimum value of the dust, the maximum value of the formaldehyde and the minimum value of the formaldehyde.
The details of the control device of the air purifier can be understood by referring to the corresponding descriptions and effects in the embodiments shown in fig. 1 to fig. 2, and are not described herein again.
Example 3
The embodiment 3 of the invention also provides an air purifier, which comprises a dust sensor, a formaldehyde sensor and a controller, wherein the dust sensor is used for acquiring dust detection data, the formaldehyde sensor is used for acquiring formaldehyde detection data, and the dust sensor, the formaldehyde sensor and the controller are in communication connection with each other.
The controller may include a processor and a memory, where the processor and memory may be connected by a bus or other means.
The processor may be a Central Processing Unit (CPU). The Processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or a combination thereof.
The memory, as a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules (e.g., the first acquisition module 20, the second acquisition module 21, the processing module 22, and the adjustment module 23 shown in fig. 3) corresponding to the control method of the air purifier in the embodiment of the present invention. The processor executes various functional applications and data processing of the processor by executing the non-transitory software programs, instructions and modules stored in the memory, namely, the control method of the air purifier in the above method embodiment is realized.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor, and the like. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory located remotely from the processor, and such remote memory may be coupled to the processor via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory and, when executed by the processor, perform a control method of an air purifier as in the embodiment shown in fig. 1.
The details of the air purifier can be understood by referring to the corresponding descriptions and effects of the embodiments shown in fig. 1 to 2, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims (10)

1. A control method of an air cleaner, comprising:
acquiring a first dust detection data set in a preset first time period;
acquiring a first formaldehyde detection data set in the first time period;
determining an initial air quality rating for the first time period from the first dust detection data set and the first formaldehyde detection data set;
and determining the fan rotating speed of the air purifier according to the initial air quality grade.
2. The method of claim 1, wherein the determining an initial air quality rating for the first time period from the first dust detection data set and the first formaldehyde detection data set comprises:
determining an initial dust quality grade according to the first dust detection data set in the first time period;
determining an initial quality level of formaldehyde from a first formaldehyde detection data set over the first time period;
when the difference value between the initial dust quality grade and the initial formaldehyde quality grade is larger than a preset grade threshold value, taking a compromise grade of the initial dust quality grade and the initial formaldehyde quality grade as the initial air quality grade;
when the difference between the dust initial quality grade and the formaldehyde initial quality grade is smaller than the grade threshold value, taking the worse grade of the dust initial quality grade and the formaldehyde initial quality grade as the initial air quality grade;
and when the initial quality grade of the dust is the same as the initial quality grade of the formaldehyde, taking the initial quality grade of the dust as the initial air quality grade.
3. The method of claim 1, wherein determining a dust quality rating from the first dust detection data set over the first time period comprises:
respectively determining the dust quality grade of each first dust detection data in the first dust detection data set in the first time period;
counting the quantity of each dust quality grade, and taking the dust quality grade with the largest quantity as the initial dust quality grade;
and/or, determining an initial quality level of formaldehyde from the first formaldehyde detection dataset over the first time period comprises:
respectively determining the formaldehyde quality grade of each first formaldehyde detection data in the first formaldehyde detection data set in the first time period;
and counting the quantity of each formaldehyde quality grade, and taking the formaldehyde quality grade with the largest quantity as the initial formaldehyde quality grade.
4. The method of claim 1, after determining a fan speed of the air purifier based on the initial air quality level, further comprising:
acquiring a second detection data set in a preset second time period, wherein the second detection data set comprises dust detection data;
selecting a maximum dust value and a minimum dust value in the first dust detection data set;
adjusting the rotating speed of the fan according to the second detection data set, the maximum dust value and the minimum dust value;
or the like, or, alternatively,
acquiring a third detection data set in a preset second time period, wherein the third detection data set comprises formaldehyde detection data;
selecting a maximum formaldehyde value and a minimum formaldehyde value in the first formaldehyde detection data set;
adjusting the rotating speed of the fan according to the third detection data set, the maximum formaldehyde value and the minimum formaldehyde value;
or acquiring a fourth detection data set in a preset second time period, wherein the fourth detection data set comprises the dust detection data and the formaldehyde detection data;
and adjusting the rotating speed of the fan according to the fourth detection data set, the maximum value of the dust, the minimum value of the dust, the maximum value of the formaldehyde and the minimum value of the formaldehyde.
5. The method of claim 4, wherein:
adjusting the fan rotation speed according to the second detection data set, the maximum dust value and the minimum dust value comprises:
judging whether the dust detection data in the second detection data set is larger than the maximum dust value or smaller than the minimum dust value;
counting a first number of detection data larger than the maximum value of the dust and a second number of detection data smaller than the minimum value of the dust;
adjusting the rotating speed of the fan according to the first dust comparison data, wherein the first dust comparison data comprise a first quantity and/or a second quantity;
or the like, or a combination thereof,
adjusting the fan rotating speed according to the third detection data set, the maximum formaldehyde value and the minimum formaldehyde value comprises:
judging whether the formaldehyde detection data in the third detection data set is larger than the maximum value of formaldehyde or not and smaller than the minimum value of formaldehyde or not;
counting a third quantity of detection data larger than the maximum value of the formaldehyde and a fourth quantity of detection data smaller than the minimum value of the formaldehyde;
adjusting the rotating speed of the fan according to the first formaldehyde comparison data, wherein the first formaldehyde comparison data comprise a third quantity and/or a fourth quantity;
or the like, or, alternatively,
the adjusting the fan rotating speed according to the fourth detection data set, the dust maximum value, the dust minimum value, the formaldehyde maximum value and the formaldehyde minimum value comprises:
determining whether the detection data belongs to the dust detection data or the formaldehyde detection data for any detection data in the fourth detection data set; when the detection data belong to the dust detection data, judging whether the detection data are larger than the maximum value of the dust and smaller than the minimum value of the dust; when the detection data belong to the formaldehyde detection data, judging whether the detection data are larger than the maximum value of formaldehyde and smaller than the minimum value of formaldehyde;
traversing all the detection data in the fourth detection data set, and respectively counting a fifth quantity of the detection data larger than the maximum value of the dust, a sixth quantity of the detection data smaller than the minimum value of the dust, a seventh quantity of the detection data larger than the maximum value of the formaldehyde and an eighth quantity of the detection data smaller than the minimum value of the formaldehyde;
and adjusting the rotating speed of the fan according to second dust comparison data and second formaldehyde comparison data, wherein the second dust comparison data comprise a fifth quantity and/or a sixth quantity, and the second formaldehyde comparison data comprise a seventh quantity and/or an eighth quantity.
6. The method of claim 5,
the adjusting the rotating speed of the fan according to the first dust comparison data comprises the following steps:
selecting a higher value of the first quantity and the second quantity to obtain a first adjustment reference value;
adjusting the rotating speed of the fan according to the first adjustment reference value;
or the like, or, alternatively,
the adjusting the rotating speed of the fan according to the first formaldehyde comparison data comprises;
selecting a higher value of the third quantity and the fourth quantity to obtain a second adjustment reference value;
adjusting the rotating speed of the fan according to the second adjustment reference value;
or the like, or, alternatively,
the adjusting the rotating speed of the fan according to the second dust comparison data and the second formaldehyde comparison data comprises the following steps:
selecting a higher value of the fifth quantity and the sixth quantity to obtain a third adjustment reference value, and determining a dust variation tendency corresponding to the third adjustment reference value;
selecting a higher value of the seventh quantity and the eighth quantity to obtain a fourth adjustment reference value; determining a formaldehyde change tendency corresponding to the fourth adjustment reference value;
and when the dust change tendency is the same as the formaldehyde change tendency, selecting a higher value of the third adjustment reference value and the fourth adjustment reference value to obtain a fifth adjustment reference value, and adjusting the rotating speed of the fan according to the fifth adjustment reference value.
7. The method of claim 6, wherein:
the adjusting the rotating speed of the fan according to the first adjusting reference value comprises the following steps:
judging whether the first adjustment reference value is larger than a preset first threshold value or not; when the first adjustment reference value is larger than the first threshold value, judging whether the first adjustment reference value is smaller than a preset second threshold value; when the first adjustment reference value is smaller than the second threshold value, adjusting the rotating speed of the fan by a preset first speed value; when the first adjustment reference value is larger than or equal to the second threshold value, adjusting the initial air quality grade by one grade, and adjusting the rotating speed of the fan to be corresponding to the adjusted initial air quality grade;
or the like, or, alternatively,
the adjusting the rotating speed of the fan according to the second adjusting reference value comprises:
judging whether the second adjustment reference value is larger than a preset third threshold value or not; when the second adjustment reference value is larger than the third threshold, judging whether the second adjustment reference value is smaller than a preset fourth threshold; when the second adjustment reference value is smaller than the fourth threshold value, adjusting the rotating speed of the fan by a preset second speed value; when the second adjustment reference value is larger than or equal to the fourth threshold value, adjusting the initial air quality grade by one grade, and adjusting the rotating speed of the fan to be corresponding to the adjusted initial air quality grade;
or the like, or a combination thereof,
the adjusting the rotating speed of the fan according to the fifth adjusting reference value comprises: judging whether the fifth adjustment reference value is larger than a preset fifth threshold value or not; when the fifth adjustment reference value is larger than the fifth threshold, judging whether the fifth adjustment reference value is smaller than a preset sixth threshold; when the fifth adjustment reference value is smaller than the sixth threshold value, adjusting the rotating speed of the fan by a preset third speed value; and when the fifth adjustment reference value is larger than or equal to the sixth threshold value, adjusting the initial air quality grade by one grade, and adjusting the rotating speed of the fan to be corresponding to the adjusted initial air quality grade.
8. A control device of an air purifier, comprising:
the first acquisition module is used for acquiring a first dust detection data set in a preset first time period;
the second acquisition module is used for acquiring a first formaldehyde detection data set in the first time period;
a processing module for determining an initial air quality level over the first time period from the first dust detection data set and the first formaldehyde detection data set;
and the adjusting module is used for determining the fan rotating speed of the air purifier according to the initial air quality grade.
9. An air purifier, comprising:
the dust sensor is used for acquiring dust detection data;
the formaldehyde sensor is used for acquiring formaldehyde detection data;
a controller, the dust sensor, the formaldehyde sensor and the controller being communicatively connected to each other, the controller having stored therein computer instructions, the controller executing the computer instructions to perform the control method of the air purifier according to any one of claims 1 to 7.
10. A computer-readable storage medium characterized in that the computer-readable storage medium stores computer instructions for causing the computer to execute the control method of the air purifier according to any one of claims 1 to 7.
CN202210730085.3A 2022-06-24 2022-06-24 Air purifier, control method and device of air purifier Active CN114909753B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444377A (en) * 2016-01-13 2016-03-30 东莞市利发爱尔空气净化系统有限公司 Control method and device for air cleaner
CN107917514A (en) * 2017-11-08 2018-04-17 盛世乐居（亚东）智能科技有限公司 Intelligent sound controls the method and intelligent sound of air purifier
CN110469531A (en) * 2019-07-31 2019-11-19 亿轶环境科技(上海)有限公司 The control device and method of frequency conversion fan for purifying and sterilizing device
JPWO2020255875A1 (en) * 2019-06-21 2020-12-24

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444377A (en) * 2016-01-13 2016-03-30 东莞市利发爱尔空气净化系统有限公司 Control method and device for air cleaner
CN107917514A (en) * 2017-11-08 2018-04-17 盛世乐居（亚东）智能科技有限公司 Intelligent sound controls the method and intelligent sound of air purifier
JPWO2020255875A1 (en) * 2019-06-21 2020-12-24
CN110469531A (en) * 2019-07-31 2019-11-19 亿轶环境科技(上海)有限公司 The control device and method of frequency conversion fan for purifying and sterilizing device

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