CN110145821B - Intelligent indoor air supply purification device and control method thereof - Google Patents

Intelligent indoor air supply purification device and control method thereof Download PDF

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Publication number
CN110145821B
CN110145821B CN201910473725.5A CN201910473725A CN110145821B CN 110145821 B CN110145821 B CN 110145821B CN 201910473725 A CN201910473725 A CN 201910473725A CN 110145821 B CN110145821 B CN 110145821B
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air
content
indoor
wind speed
indoor air
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CN110145821A (en
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尉巧珍
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Kongjing Vision Intelligent Technology Co ltd
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Wei Qiaozhen
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • F24F11/56—Remote control
    • 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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • 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
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
    • 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
    • F24F2110/76—Oxygen
    • 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

Abstract

The invention discloses an intelligent indoor air supply purification device and a control method thereof, wherein the intelligent indoor air supply purification device comprises a window type power ventilator and an air purifier, the window type power ventilator is wirelessly connected with the air purifier and comprises a second fan, a second signal sending and receiving device, a second detector and a second control device, the air purifier comprises a first fan, a first signal sending and receiving device, a first detector, an oxygen concentration sensor and a first control device, the first detector is installed on one side of an air inlet of the air purifier, and the first control device is used for respectively controlling the first fan and the second fan to work according to the oxygen concentration in indoor air, the PM2.5 content in outdoor air, the PM2.5 content in indoor air and the preset target regulation PM2.5 content. The invention can intelligently control the work of the fresh air device and the air purifier according to the quality and the freshness of the indoor air, so that the indoor air has better purification effect while meeting the freshness.

Description

Intelligent indoor air supply purification device and control method thereof
Technical Field
The invention relates to the field of air purification, in particular to an intelligent indoor air supply purification device and a control method thereof.
Background
Along with the improvement of living standard of people, more and more people begin to pay attention to the quality of air, wherein PM2.5 particulate matters in the air are the objects of important attention of people, PM2.5 becomes the leading pollutant of urban air in China now, and many people adopt air purifier to carry out evolution treatment on indoor air. However, the air purifiers on the market at present only solve PM2.5 particles in the indoor ambient air, and contribute little to the improvement of the freshness of the indoor air.
Indoor room leakproofness is too good or door and window are under the state of closeness, purification diseases such as oxygen deficiency, dizziness, weak easily take place, need untimely open new trend device or exterior window and introduce the outside air, indoor frequent ventilation can clear away the harmful gas in the room air effectively, purify the room air, reduce the content of germ in the room air and increase oxygen content in the air, however air purifier is when indoor operation, if the outside air of introducing more can lead to the room air purifying effect relatively poor, the coordinated control research of prior art air purifier and room ventilation is less at present.
The patent number ZL2014207548328 and the utility model named as an indoor air supply purification system disclose an indoor air supply purification system, which comprises an air purifier, a fresh air device and an air duct, wherein the fresh air device is arranged on an indoor wall body or a glass window, the air duct is connected with the fresh air device, the air duct extends to the outside of the wall body or the outside of the glass window, and the fresh air device is wirelessly connected with the air purifier; the ventilating duct is L-shaped, the opening of the ventilating duct arranged outside the wall body or outside the glass window faces downwards, and a one-way valve is arranged in the ventilating duct; the fresh air device comprises a shell, a second fan is arranged in the shell and driven by a second motor, a ventilation window is arranged on the upper portion of the outer side of the shell, a second controller, a display and a signal receiving device are arranged on the lower portion of the outer side of the shell, and the second controller is connected with the second motor, the display and the signal receiving device respectively. This patent is through installing the new trend device indoor, send into the outside air by air pipe indoor, and air purifier filters indoor air and disinfects, reaches the clean new trend of supply, has solved door and window because sealed easily causes oxygen deficiency, dizziness, adynamic problem to dual purification room air has satisfied people's urgent demand.
Although the above-mentioned patent technology has realized that the room air supplyes and purifies the purpose, but new trend device is less with air purifier's intelligent control technique, many times the user needs manual control, control start and shutdown according to indoor oxygen concentration if the new trend device, air purifier's air inlet gear speed is set for by the user according to actual conditions, because indoor outer PM2.5 particulate matter concentration is different, the frequent start and the shutdown of new trend device can cause indoor PM2.5 particulate matter concentration to change great, thereby lead to the user to need frequently operate air purifier in order to ensure the room air purification effect, led to the user very big unchangeably, and if air purifier moves with same air inlet gear speed always, then can lead to the room air purification effect relatively poor, thereby influence user's healthy.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide an intelligent indoor air supply purification device and a control method thereof, which can intelligently control the work of a fresh air device and an air purifier according to the indoor air quality and freshness so that the indoor air can meet the freshness requirement and has better purification effect.
Therefore, the invention adopts the following technical scheme: an intelligent indoor air supply and purification device comprises a window type power ventilator and an air purifier, wherein the window type power ventilator is in wireless connection with the air purifier, the window type power ventilator comprises a second fan, a second signal sending and receiving device, a second detector and a second control device, the second detector is installed outdoors and used for detecting the content of PM2.5 in outdoor air, the air purifier comprises a first fan, a first signal sending and receiving device, a first detector, an oxygen concentration sensor and a first control device, the first detector is installed on one side of an air inlet of the air purifier and used for detecting the content of PM2.5 in indoor air, the oxygen concentration sensor is used for detecting the oxygen concentration in the indoor air, the second control device is used for acquiring the oxygen concentration in the indoor air and sending the oxygen concentration in the indoor air to the first control device, the first control device is used for respectively controlling the work of the first fan and the second fan according to the oxygen concentration in the indoor air, the PM2.5 content in the outdoor air, the PM2.5 content in the indoor air and the preset target regulation PM2.5 content.
Further, the first control device comprises a monitoring module, a first obtaining module, a first control module, a first determining module, a second determining module, a third determining module, a fourth determining module, a fifth determining module and a second control module;
the monitoring module is used for monitoring whether the current time is within a preset fresh air supply time period;
the first acquisition module is used for acquiring the content of PM2.5 in a target regulation preset in the air purifier, the oxygen concentration in indoor air, the content of PM2.5 in outdoor air and the content of PM2.5 in indoor air when the current time is within a preset fresh air supply time period;
the first determining module is used for determining the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air according to the corresponding relation between the preset oxygen concentration in the indoor air and the wind speed of the window type power ventilator, and the first control module is used for controlling the window type power ventilator to operate at the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air;
the second determination module is used for calculating indoor and outdoor PM2.5 change coefficients according to the PM2.5 content in outdoor air, the PM2.5 content in indoor air and the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air;
the third determining module is used for determining the wind speed variation of the air purifier corresponding to the indoor and outdoor PM2.5 variation coefficients according to the corresponding relation between the preset indoor and outdoor PM2.5 variation coefficients and the wind speed variation of the air purifier;
the fourth determination module is used for calculating a PM2.5 content difference value according to the PM2.5 content in the indoor air and a preset target regulation PM2.5 content;
the fifth determining module is used for determining the wind speed of the air purifier corresponding to the PM2.5 content difference value and the wind speed variation according to the preset corresponding relation between the PM2.5 content difference value and the wind speed variation and the wind speed of the air purifier;
the second control module is used for controlling the air purifier to operate at the wind speed of the air purifier corresponding to the PM2.5 content difference and the wind speed variation.
Further, the second determining module is configured to calculate an indoor and outdoor PM2.5 variation coefficient according to a PM2.5 content in outdoor air, a PM2.5 content in indoor air, a wind speed of the window type power ventilator corresponding to an oxygen concentration in the indoor air, and a first preset indoor and outdoor PM2.5 variation coefficient formula, where the first preset indoor and outdoor PM2.5 variation coefficient formula is:
X1=(W1-N1)*F1；
x1-indoor and outdoor PM2.5 coefficient of variation, W1-PM 2.5 content in outdoor air, N1-PM 2.5 content in indoor air, and F1-wind speed of the window type power ventilator corresponding to oxygen concentration in the indoor air.
The invention also adopts the following technical scheme: a control method of an intelligent indoor air make-up purification apparatus, the control method comprising:
monitoring whether the current time is within a preset fresh air supply time period or not;
when the current time is within a preset fresh air supply time period, acquiring the content of PM2.5 in the air purifier, the oxygen concentration in the indoor air, the PM2.5 content in the outdoor air and the PM2.5 content in the indoor air which are preset targets;
determining the wind speed of a window type power ventilator corresponding to the oxygen concentration in the indoor air according to the corresponding relation between the preset oxygen concentration in the indoor air and the wind speed of the window type power ventilator, and controlling the window type power ventilator to operate at the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air;
calculating indoor and outdoor PM2.5 change coefficients according to the PM2.5 content in outdoor air, the PM2.5 content in indoor air and the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air;
determining the wind speed variation of the air purifier corresponding to the indoor and outdoor PM2.5 variation coefficients according to the corresponding relation between the preset indoor and outdoor PM2.5 variation coefficients and the wind speed variation of the air purifier;
calculating a PM2.5 content difference value according to the PM2.5 content in the indoor air and a preset target regulation PM2.5 content;
and determining the wind speed of the air purifier corresponding to the PM2.5 content difference value and the wind speed variation according to the preset corresponding relation between the PM2.5 content difference value and the wind speed variation and controlling the air purifier to operate at the wind speed of the air purifier corresponding to the PM2.5 content difference value and the wind speed variation.
Further, the control method further includes:
and when the current time is not in the preset fresh air supply time, controlling the window type power ventilator to be closed, and controlling the air purifier to adjust the air speed according to the PM2.5 content in the indoor air and a preset target adjustment PM2.5 content.
The invention also adopts the following technical scheme: a control method of an intelligent indoor air make-up purification apparatus, the control method comprising:
monitoring whether the current time is within a preset fresh air supply time period or not;
when the current time is within a preset fresh air supply time period, acquiring the content of PM2.5 in a preset target regulation mode in the air purifier, and acquiring the oxygen concentration in indoor air, the PM2.5 content in outdoor air and the PM2.5 content in indoor air;
recording the oxygen concentration in the indoor air at the starting time point of the preset fresh air supply time period at the current time as A, recording the PM2.5 content in the outdoor air at the starting time point of the preset fresh air supply time period at the current time as B, and recording the PM2.5 content in the indoor air at the starting time point of the preset fresh air supply time period at the current time as C;
determining the opening time of a window type power ventilator corresponding to the oxygen concentration A in the indoor air according to the corresponding relation between the preset oxygen concentration in the indoor air and the opening time of the window type power ventilator, and controlling the window type power ventilator to be opened for the first time and then closed, wherein the first time is the opening time of the window type power ventilator corresponding to the oxygen concentration A in the indoor air;
calculating the PM2.5 change coefficient of the indoor air and the outdoor air according to the PM2.5 content B in the outdoor air, the PM2.5 content C in the indoor air, the preset wind speed of the window type power ventilator and the first time;
determining the wind speed variation of the air purifier corresponding to the indoor and outdoor PM2.5 variation coefficients according to the corresponding relation between the preset indoor and outdoor PM2.5 variation coefficients and the wind speed variation of the air purifier;
calculating a PM2.5 content difference value according to the PM2.5 content C in the indoor air and a preset target regulation PM2.5 content;
and determining the wind speed of the air purifier corresponding to the PM2.5 content difference and the wind speed variation according to the preset corresponding relation between the PM2.5 content difference and the wind speed variation and the wind speed of the air purifier, and controlling the air purifier to continuously operate at the wind speed of the air purifier corresponding to the PM2.5 content difference and the wind speed variation.
Further, the step of calculating the PM2.5 variation coefficient of the indoor and outdoor air according to the PM2.5 content B in the outdoor air, the PM2.5 content C in the indoor air, the preset wind speed of the window type power ventilator and the first time specifically includes:
calculating indoor and outdoor PM2.5 change coefficients according to PM2.5 content in outdoor air, PM2.5 content in indoor air, a preset wind speed of a window type power ventilator, a first time and a second preset indoor and outdoor PM2.5 change coefficient formula, wherein the second preset indoor and outdoor PM2.5 change coefficient formula is as follows:
X2=(W2-N2)*F2*T2；
x2-indoor and outdoor PM2.5 change coefficient, W2-PM 2.5 content in outdoor air, N2-PM 2.5 content in indoor air, F2 preset wind speed of a window type power ventilator is constant, and T2-first time.
Further, the control method further includes:
and when the current time is not in the preset fresh air supply time, controlling the window type power ventilator to be closed, and controlling the air purifier to adjust the air speed according to the PM2.5 content in the indoor air and a preset target adjustment PM2.5 content.
The invention has the beneficial effects that:
(1) the operation of the air purifier and the window type power ventilator is intelligently controlled according to the PM2.5 content in the indoor air, the PM2.5 content in the outdoor air and the oxygen concentration in the indoor air, so that the indoor air has better purification effect while meeting the freshness, a user does not need to frequently control the air manually, and great convenience is brought to the user;
(2) the wind speed of the window type power ventilator is determined according to the oxygen concentration in the indoor air, and the operation parameters of the air purifier are further determined by combining the PM2.5 content in the indoor air and the PM2.5 content in the outdoor air, so that the intelligent linkage control of the air window type power ventilator and the air purifier according to the indoor and outdoor air conditions is realized, the air speed of the air purifier is reasonably controlled according to the real indoor PM2.5 change conditions, the indoor air purification effect is ensured, and the electricity consumption of the air purifier is effectively reduced;
(3) the starting time of the window type power ventilator is determined according to the oxygen concentration in the indoor air, the PM2.5 content change condition after the fresh air is introduced indoors is judged by combining the PM2.5 content in the indoor air and the outdoor air, and the wind speed of the air purifier is reasonably controlled according to the judged PM2.5 content change condition, so that the air purifier effectively reduces the electricity consumption of the air purifier while ensuring the indoor air purification effect.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent indoor air supply purification device.
Fig. 2 is a hardware connection diagram of the intelligent indoor air supply purification device.
Description of reference numerals: 1-a second fan, 2-a window type power ventilator, 3-a second control device, 4-a second signal sending and receiving device, 5-an outer window, 6-a first detector, 7-a first signal sending and receiving device, 8-a first control device, 9-an air purifier, 10-a first fan, 11-an oxygen concentration sensor and 12-a second detector.
Detailed Description
The invention is explained in further detail below with reference to specific embodiments and with reference to the drawings.
The first embodiment is as follows: referring to fig. 1 and 2, the embodiment provides an intelligent indoor air supply and purification device, which includes a window type power ventilator 2 and an air purifier 9 installed on an outer window 5, where the window type power ventilator 2 is wirelessly connected with the air purifier 9, the window type power ventilator 2 may be installed at the upper end of glass in the outer window, may also be installed in an upper window frame of the outer window, and may also be installed on one side of a sash of the outer window (mainly applicable to a sliding window), where the window type power ventilator may also be replaced by other existing fresh air devices.
The window type power ventilator 2 comprises a second fan 1, a second signal sending and receiving device 4, a second detector 12 and a second control device 3, the second detector 12 is installed outdoors, the second detector 12 is used for detecting the content of PM2.5 in outdoor air, the second control device 3 is respectively and electrically connected with the second fan 1, the second signal sending and receiving device 4 and the second detector 12, the second fan 1 is used for introducing fresh outdoor air into a room, the second signal sending and receiving device 4 is used for sending data to a first signal sending and receiving device 7 of an air purifier and receiving the data sent by the first signal sending and receiving device 7 of the air purifier, namely, the window type power ventilator 2 and the air purifier respectively exchange data through the first signal sending and receiving device 7 and the second signal sending and receiving device 4, the second control device 3 is used for obtaining the oxygen concentration in indoor air, and the oxygen concentration in the indoor air is sent to the first control device, and the second fan is controlled to work according to the information sent by the first control device.
Air purifier 9 includes first fan 10, first signal transmission receiving arrangement 7, installs first detector 6, oxygen concentration sensor 11 and the first controlling means 8 of air purifier's air intake one side, first detector 6 is arranged in detecting the PM2.5 content in the room air, oxygen concentration sensor 11 is arranged in detecting the oxygen concentration in the room air, first controlling means 8 is connected with first fan 10, first signal transmission receiving arrangement 7, first detector 6, oxygen concentration sensor 11 electricity respectively.
The first control device 8 is used for respectively controlling the first fan and the second fan to work according to the oxygen concentration in the indoor air, the PM2.5 content in the outdoor air, the PM2.5 content in the indoor air and the preset target regulation PM2.5 content, wherein the PM2.5 content data in the outdoor air is acquired through a window type power ventilator, the preset target regulation PM2.5 content is preset in the air purifier, the second fan works by sending a control command to the second control device, and indirect control is performed through the second control device.
Specifically, the first control device comprises a monitoring module, a first obtaining module, a first control module, a first determining module, a second determining module, a third determining module, a fourth determining module, a fifth determining module and a second control module.
The monitoring module is used for monitoring whether the current time is within a preset fresh air supply time period.
Specifically, the preset fresh air supply time period may be a single time period or a plurality of time periods, and the user may set in advance according to the requirement, for example, in two time periods of 08: 00-08: 30 and 11: 00-11: 30 in the morning, the monitoring module automatically monitors whether the current time is in the two time periods after the user starts the intelligent indoor air supply purification device.
The first acquisition module is used for acquiring the content of PM2.5, the oxygen concentration in indoor air, the content of PM2.5 in outdoor air and the content of PM2.5 in indoor air which are preset in the air purifier when the current time is within the preset fresh air supply time period.
Specifically, a preset target adjustment PM2.5 content is set in advance in the air purifier, the oxygen concentration in the indoor air is detected by the oxygen concentration sensor, the PM2.5 content in the outdoor air is detected by the second detector, and the PM2.5 content in the indoor air is detected by the first detector.
The first determining module is used for determining the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air according to the corresponding relation between the preset oxygen concentration in the indoor air and the wind speed of the window type power ventilator, and the first control module is used for controlling the window type power ventilator to operate at the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air.
Specifically, the corresponding relationship between the oxygen concentration in the indoor air and the wind speed of the window type power ventilator can be obtained through a large number of experimental analysis or theoretical analysis, and after the indoor space size and the preset oxygen concentration in the indoor air are preset, the oxygen concentration ranges in different indoor air correspond to the wind speed of the corresponding window type power ventilator, wherein the wind speed of the window type power ventilator comprises a plurality of wind inlet speeds.
For example, the following steps are carried out: the wind speed of the window type power ventilator comprises five wind inlet gear speeds of 0m/s, 1m/s, 1.5m/s, 2m/s and 2.5m/s, the indoor air oxygen concentration is larger than or equal to 25% and corresponds to the wind speed of 0m/s, the indoor air oxygen concentration is larger than or equal to 25% and corresponds to the wind speed of 1m/s, the indoor air oxygen concentration is larger than or equal to 22% and corresponds to the wind speed of 1.5m/s, the indoor air oxygen concentration is larger than or equal to 18% and corresponds to the wind speed of 2m/s, the indoor air oxygen concentration is smaller than 15% and corresponds to the wind speed of 2.5 m/s. It should be noted that, in this embodiment, the wind speed of the window type power ventilator refers to the wind speed of the intake air, and in practical applications, the wind speed of the intake air may be replaced by the rotational speed of the second fan in the window type power ventilator or the electric power to represent the operating parameters of the window type power ventilator.
The second determination module is used for calculating indoor and outdoor PM2.5 change coefficients according to the PM2.5 content in outdoor air, the PM2.5 content in indoor air and the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air.
Specifically, after the wind speed of the window type power ventilator is determined, indoor and outdoor PM2.5 change coefficients are calculated according to the PM2.5 content in outdoor air, the PM2.5 content in indoor air, the wind speed of the window type power ventilator and a first preset indoor and outdoor PM2.5 change coefficient formula, the indoor and outdoor PM2.5 change coefficients are used for judging the PM2.5 content change situation after fresh air is introduced indoors, so that the air purifier can operate at a reasonable wind speed, wherein the first preset indoor and outdoor PM2.5 change coefficient formula is as follows:
X1=(W1-N1)*F1；
x1-indoor and outdoor PM2.5 coefficient of variation;
W1-PM 2.5 content in outdoor air;
N1-PM 2.5 content in room air;
f1-the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air.
For example, the following steps are carried out: assuming that the wind speed of the window type power ventilator is 2m/s, the PM2.5 content in the outdoor air is 200 mug/mm3And the PM2.5 content in the indoor air is 80 mu g/mm3The coefficient of variation X of indoor and outdoor PM2.5 is 240 μ g/(s × mm)2）。
The third determining module is used for determining the wind speed variation of the air purifier corresponding to the indoor and outdoor PM2.5 variation coefficients according to the corresponding relation between the preset indoor and outdoor PM2.5 variation coefficients and the wind speed variation of the air purifier.
Specifically, the wind speed variation of the air purifier is a wind speed change value converted based on the wind speed of the original air purifier, because the indoor and outdoor PM2.5 variation coefficients are used for judging the PM2.5 content variation situation after fresh air is introduced indoors, when the indoor and outdoor PM2.5 variation coefficients are large, the PM2.5 content in indoor air is obviously increased, the air purifier can increase large wind speed to improve air purification effect, when the indoor and outdoor PM2.5 variation coefficients are small, the air purifier can increase small wind speed to improve air purification effect, when the indoor and outdoor PM2.5 variation coefficients are negative values (outdoor air quality is better than indoor air quality), the air purifier can reduce wind speed to reduce power consumption of the air purifier, wherein the corresponding relation between the preset indoor and outdoor PM2.5 variation coefficients and the wind speed variation of the air purifier can be obtained through a large amount of experimental analysis or theoretical analysis, and the wind speed increase of the matched air purifier is realized by testing different indoor and outdoor PM2.5 variation coefficients in the experimental tests The amount or the reduction is that the wind speed increase is preferably matched with the wind speed increase of the air purifier, for example, the air purifier comprises ten wind speed steps of 0m/s, 1m/s, 2m/s, 3m/s, 4m/s, 5m/s, 6m/s, 7m/s, 8m/s and 9m/s, and the wind speed increase can be more than one of 1m/s, 2m/s, 3m/s, 4m/s, 5m/s, 6m/s, 7m/s and 8 m/s.
The fourth determination module is used for calculating the PM2.5 content difference according to the PM2.5 content in the indoor air and the preset target regulation PM2.5 content.
The fifth determining module is used for determining the wind speed of the air purifier corresponding to the PM2.5 content difference value and the wind speed variation according to the preset corresponding relation between the PM2.5 content difference value and the wind speed variation and the wind speed of the air purifier.
The second control module is used for controlling the air purifier to operate at the wind speed of the air purifier corresponding to the PM2.5 content difference and the wind speed variation.
Specifically, the air purifier comprises a plurality of wind speeds (also called air inlet gear speeds), and the air purifier is respectively provided with a corresponding relation between a PM2.5 content difference value and the wind speed of the air purifier and a corresponding relation between a PM2.5 content difference value and a wind speed variation value and the wind speed of the air purifier, wherein the air purifier uses a corresponding relation between a preset PM2.5 content difference value and the wind speed of the air purifier when the current time is not within a preset fresh air supply time period, and the air purifier uses a corresponding relation between a preset PM2.5 content difference value and the wind speed variation value and the wind speed of the air purifier when the current time is within the preset fresh air supply time period.
And when the current time is not within the preset fresh air supply time, the window type power ventilator is closed, the air purifier adjusts the air speed according to the PM2.5 content in the indoor air and the preset target adjustment PM2.5 content, namely, the corresponding air speed is automatically selected to operate according to the PM2.5 content difference value (the difference value between the PM2.5 content in the indoor air and the preset target adjustment PM2.5 content) and the corresponding relation between the preset PM2.5 content difference value and the air speed of the air purifier.
For example, the air purifier comprises ten air inlet speed stages of 0m/s, 1m/s, 2m/s, 3m/s, 4m/s, 5m/s, 6m/s, 7m/s, 8m/s and 9m/s, and the preset target adjusts the PM2.5 content to be 60 μ g/mm3。
The difference value of PM2.5 content is more than or equal to 80 mu g/mm3Corresponding to the speed of an air inlet gear of 9m/s and 80 mu g/mm3>The difference value of the PM2.5 content is more than or equal to 70 mu g/mm3Corresponding to the speed of an air inlet gear of 8m/s and 70 mu g/mm3>The difference value of PM2.5 content is more than or equal to 60 mu g/mm360 mu g/mm corresponding to the speed of an air inlet gear of 7m/s3>The difference value of PM2.5 content is more than or equal to 50 mu g/mm350 mu g/mm corresponding to the speed of an air inlet gear of 6m/s3>The difference value of PM2.5 content is more than or equal to 40 mu g/mm3Corresponding to the speed of an air inlet gear of 5m/s and 40 mu g/mm3>The difference value of PM2.5 content is more than or equal to 30 mu g/mm330 mu g/mm corresponding to the speed of the air inlet gear of 4m/s3>The difference value of PM2.5 content is more than or equal to 20 mu g/mm3Corresponding to the speed of an air inlet gear at/3 m/s, 30 mu g/mm3>The difference value of PM2.5 content is more than or equal to 20 mu g/mm3Corresponding to 3m/s advanceWind gear speed, 20. mu.g/mm3>The difference value of PM2.5 content is more than or equal to 10 mu g/mm3Corresponding to the speed of an air inlet gear of 2m/s and 10 mu g/mm3>The difference value of PM2.5 content is more than or equal to 0 mu g/mm3Corresponding to the speed of an air inlet gear of 1m/s and 0 mu g/mm3>The difference of the PM2.5 content corresponds to the intake gear speed of 0 m/s. It should be noted that, the air speed of the air purifier in this embodiment refers to the air speed of the intake air, and in practical application, the operating parameter of the air purifier may also be represented by the rotational speed of the first fan in the air purifier or the electric power instead of the air speed.
When the current time is not in the preset fresh air supply time, the air purifier determines the air speed of the air purifier corresponding to the PM2.5 content difference value and the air speed variation according to the preset corresponding relation of the PM2.5 content difference value, the air speed variation and the air speed of the air purifier, wherein the preset corresponding relation of the PM2.5 content difference value, the air speed variation and the air speed of the air purifier refers to the preset corresponding relation of the PM2.5 content difference value and the air speed of the air purifier, when the air purifier is actually applied, the reference air speed of the air purifier is determined according to the PM2.5 content difference value, the preset corresponding relation of the PM2.5 content difference value and the air speed of the air purifier, and then the actual air speed of the air purifier is determined according to the determined reference air speed and the determined air speed variation of the air purifier.
For example, the difference in PM2.5 content is 35. mu.g/mm3And the wind speed variation is 2m/s, the air inlet gear speed of the air purifier with the reference wind speed of 4m/s is determined according to the corresponding relation between the preset PM2.5 content difference value and the wind speed of the air purifier, the actual wind speed of the air purifier is calculated to be 6m/s according to the wind speed variation, and the air purifier is controlled to operate at the wind speed of 6 m/s.
On the basis, the embodiment further provides a control method of the intelligent indoor air supply purification device, and the control method comprises the following steps:
monitoring whether the current time is within a preset fresh air supply time period or not;
when the current time is within a preset fresh air supply time period, acquiring the content of PM2.5 in the air purifier, the oxygen concentration in the indoor air, the PM2.5 content in the outdoor air and the PM2.5 content in the indoor air which are preset targets;
determining the wind speed of a window type power ventilator corresponding to the oxygen concentration in the indoor air according to the corresponding relation between the preset oxygen concentration in the indoor air and the wind speed of the window type power ventilator, and controlling the window type power ventilator to operate at the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air;
calculating indoor and outdoor PM2.5 change coefficients according to the PM2.5 content in outdoor air, the PM2.5 content in indoor air and the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air;
determining the wind speed variation of the air purifier corresponding to the indoor and outdoor PM2.5 variation coefficients according to the corresponding relation between the preset indoor and outdoor PM2.5 variation coefficients and the wind speed variation of the air purifier;
calculating a PM2.5 content difference value according to the PM2.5 content in the indoor air and a preset target regulation PM2.5 content;
and determining the wind speed of the air purifier corresponding to the PM2.5 content difference value and the wind speed variation according to the preset corresponding relation between the PM2.5 content difference value and the wind speed variation and controlling the air purifier to operate at the wind speed of the air purifier corresponding to the PM2.5 content difference value and the wind speed variation.
Preferably, the control method further includes:
and when the current time is not in the preset fresh air supply time, controlling the window type power ventilator to be closed, and controlling the air purifier to adjust the air speed according to the PM2.5 content in the indoor air and a preset target adjustment PM2.5 content.
Example two: with reference to the first intelligent indoor air supply purification device provided in the first embodiment, this embodiment provides a control method for an intelligent indoor air supply purification device, where the control method includes:
and S1, monitoring whether the current time is in a preset fresh air supply time period.
Specifically, the preset fresh air supply time period may be a single time period or a plurality of time periods, and the user may set in advance according to the requirement, for example, in two time periods of 08: 00-08: 30 and 11: 00-11: 30 in the morning, the monitoring module automatically monitors whether the current time is in the two time periods after the user starts the intelligent indoor air supply purification device.
And S2, when the current time is within the preset fresh air supply time period, acquiring the content of PM2.5 in the air purifier, and acquiring the oxygen concentration in the indoor air, the PM2.5 content in the outdoor air and the PM2.5 content in the indoor air.
Specifically, a preset target adjustment PM2.5 content is set in advance in the air purifier, the oxygen concentration in the indoor air is detected by the oxygen concentration sensor, the PM2.5 content in the outdoor air is detected by the second detector, and the PM2.5 content in the indoor air is detected by the first detector.
And S3, recording the oxygen concentration in the indoor air at the starting time point of the preset fresh air supply time period as A, recording the PM2.5 content in the outdoor air at the starting time point of the preset fresh air supply time period as B, and recording the PM2.5 content in the indoor air at the starting time point of the preset fresh air supply time period as C.
Specifically, the time points of acquiring the oxygen concentration in the indoor air, the PM2.5 content in the outdoor air and the PM2.5 content in the outdoor air are all the starting time points of the preset fresh air supply time period, and the data acquired at the time points are only adopted for subsequent calculation and judgment.
S4, determining the opening time of the window type power ventilator corresponding to the oxygen concentration A in the indoor air according to the corresponding relation between the preset oxygen concentration in the indoor air and the opening time of the window type power ventilator, and controlling the window type power ventilator to be closed after being opened for the first time, wherein the first time is the opening time of the window type power ventilator corresponding to the oxygen concentration A in the indoor air.
Specifically, the window type power ventilator with multiple gear air inlet gear speeds is high in price, in the embodiment, the window type power ventilator with low price and only one air inlet gear speed is adopted, the fresh air introducing amount in the preset fresh air supply time period is controlled by controlling the opening time of the window type power ventilator (or the second fan), the lower the oxygen concentration in the indoor air is, the more fresh air needs to be introduced, the longer the opening time of the window type power ventilator (or the second fan) is, and the corresponding relation between the oxygen concentration in the preset indoor air and the opening time of the window type power ventilator can be determined through a large number of experimental analyses or theoretical analyses.
And S5, calculating the PM2.5 change coefficient of the indoor and outdoor air according to the PM2.5 content B in the outdoor air, the PM2.5 content C in the indoor air, the preset wind speed of the window type power ventilator and the first time.
Specifically, the indoor and outdoor PM2.5 variation coefficients may be calculated according to the PM2.5 content in the outdoor air, the PM2.5 content in the indoor air, the preset wind speed of the window type power ventilator, the first time, and a second preset indoor and outdoor PM2.5 variation coefficient formula, where the second preset indoor and outdoor PM2.5 variation coefficient formula is:
X2=(W2-N2)*F2*T2；
x2-indoor and outdoor PM2.5 coefficient of variation;
W2-PM 2.5 content in outdoor air;
N2-PM 2.5 content in room air;
f2, the wind speed of the window type power ventilator is preset to be a constant value;
t2-first time.
S6, determining the wind speed variation of the air purifier corresponding to the indoor and outdoor PM2.5 variation coefficients according to the corresponding relation between the preset indoor and outdoor PM2.5 variation coefficients and the wind speed variation of the air purifier.
And S7, calculating the PM2.5 content difference according to the PM2.5 content C in the indoor air and the preset target regulation PM2.5 content.
S8, determining the wind speed of the air purifier corresponding to the PM2.5 content difference and the wind speed variation according to the preset corresponding relation between the PM2.5 content difference and the wind speed variation and controlling the air purifier to continuously operate at the wind speed of the air purifier corresponding to the PM2.5 content difference and the wind speed variation.
Specifically, the control methods in the steps S6, S7, and S8 are similar to the corresponding control methods in embodiment one, and are not specifically described here.
The protection scope of the present invention is not limited to the above description, and any other products with the same or similar technical solutions as or to the present invention, regardless of the shape or structure, are within the protection scope of the present invention.

Claims (4)

1. An intelligent indoor air supply and purification device comprises a window type power ventilator (2) and an air purifier (9), wherein the window type power ventilator (2) is in wireless connection with the air purifier (9), the intelligent indoor air supply and purification device is characterized in that the window type power ventilator (2) comprises a second fan (1), a second signal sending and receiving device (4), a second detector (12) and a second control device (3), the second detector (12) is installed outdoors and used for detecting the content of PM2.5 in outdoor air, the air purifier (9) comprises a first fan (10), a first signal sending and receiving device (7), a first detector (6) installed on one side of an air inlet of the air purifier, an oxygen concentration sensor (11) and a first control device (8), the first detector (6) is used for detecting the content of PM2.5 in indoor air, the oxygen concentration sensor (11) is used for detecting the oxygen concentration in indoor air, the second control device (3) is used for acquiring the oxygen concentration in the indoor air, sending the oxygen concentration in the indoor air to the first control device, and controlling the work of the second fan according to information sent by the first control device, the first control device (8) is used for respectively controlling the work of the first fan and the work of the second fan according to the oxygen concentration in the indoor air, the PM2.5 content in outdoor air, the PM2.5 content in the indoor air and a preset target regulation PM2.5 content, and the first control device comprises a monitoring module, a first acquisition module, a first control module, a first determination module, a second determination module, a third determination module, a fourth determination module, a fifth determination module and a second control module;
the monitoring module is used for monitoring whether the current time is within a preset fresh air supply time period;
the first acquisition module is used for acquiring the content of PM2.5 in a target regulation preset in the air purifier, the oxygen concentration in indoor air, the content of PM2.5 in outdoor air and the content of PM2.5 in indoor air when the current time is within a preset fresh air supply time period;
the first determining module is used for determining the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air according to the corresponding relation between the preset oxygen concentration in the indoor air and the wind speed of the window type power ventilator; the first control module is used for controlling the window type power ventilator to operate at the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air;
the second determination module is used for calculating indoor and outdoor PM2.5 change coefficients according to the PM2.5 content in outdoor air, the PM2.5 content in indoor air and the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air;
the third determining module is used for determining the wind speed variation of the air purifier corresponding to the indoor and outdoor PM2.5 variation coefficients according to the corresponding relation between the preset indoor and outdoor PM2.5 variation coefficients and the wind speed variation of the air purifier;
the fourth determination module is used for calculating a PM2.5 content difference value according to the PM2.5 content in the indoor air and a preset target regulation PM2.5 content;
the fifth determining module is used for determining the wind speed of the air purifier corresponding to the PM2.5 content difference and the wind speed variation according to the corresponding relation between the preset PM2.5 content difference, the wind speed variation and the wind speed of the air purifier;
the second control module is used for controlling the air purifier to operate at the wind speed of the air purifier corresponding to the PM2.5 content difference and the wind speed variation.
2. The intelligent indoor air supply purification device as claimed in claim 1, wherein the second determination module is configured to calculate an indoor/outdoor PM2.5 variation coefficient according to a PM2.5 content in outdoor air, a PM2.5 content in indoor air, a wind speed of a window type power ventilator corresponding to an oxygen concentration in the indoor air, and a first preset indoor/outdoor PM2.5 variation coefficient formula, where the first preset indoor/outdoor PM2.5 variation coefficient formula is:
X1=(W1-N1)*F1；
x1-indoor and outdoor PM2.5 coefficient of variation, W1-PM 2.5 content in outdoor air, N1-PM 2.5 content in indoor air, and F1-wind speed of the window type power ventilator corresponding to oxygen concentration in the indoor air.
3. A control method of the intelligent indoor air supply purification apparatus as claimed in claim 1 or 2, wherein the control method comprises:
monitoring whether the current time is within a preset fresh air supply time period or not;
when the current time is within a preset fresh air supply time period, acquiring the content of PM2.5 in the air purifier, the oxygen concentration in the indoor air, the PM2.5 content in the outdoor air and the PM2.5 content in the indoor air which are preset targets;
determining the wind speed of a window type power ventilator corresponding to the oxygen concentration in the indoor air according to the corresponding relation between the preset oxygen concentration in the indoor air and the wind speed of the window type power ventilator, and controlling the window type power ventilator to operate at the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air;
calculating indoor and outdoor PM2.5 change coefficients according to the PM2.5 content in outdoor air, the PM2.5 content in indoor air and the wind speed of the window type power ventilator corresponding to the oxygen concentration in the indoor air;
determining the wind speed variation of the air purifier corresponding to the indoor and outdoor PM2.5 variation coefficients according to the corresponding relation between the preset indoor and outdoor PM2.5 variation coefficients and the wind speed variation of the air purifier;
calculating a PM2.5 content difference value according to the PM2.5 content in the indoor air and a preset target regulation PM2.5 content;
and determining the wind speed of the air purifier corresponding to the PM2.5 content difference value and the wind speed variation according to the preset corresponding relation between the PM2.5 content difference value and the wind speed variation and controlling the air purifier to operate at the wind speed of the air purifier corresponding to the PM2.5 content difference value and the wind speed variation.
4. The control method of an intelligent indoor air make-up purification apparatus as claimed in claim 3, further comprising:
and when the current time is not in the preset fresh air supply time, controlling the window type power ventilator to be closed, and controlling the air purifier to adjust the air speed according to the PM2.5 content in the indoor air and a preset target adjustment PM2.5 content.
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