CN111121246A - Whole-house pipeless type air flow field control method - Google Patents

Whole-house pipeless type air flow field control method Download PDF

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Publication number
CN111121246A
CN111121246A CN201811273525.7A CN201811273525A CN111121246A CN 111121246 A CN111121246 A CN 111121246A CN 201811273525 A CN201811273525 A CN 201811273525A CN 111121246 A CN111121246 A CN 111121246A
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threshold value
fresh air
air
gear
working mode
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CN201811273525.7A
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CN111121246B (en
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霍彦强
俞凝
晏建林
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Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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]
    • 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
    • F24F2110/70—Carbon dioxide
    • 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 relates to a full-house pipeless type air flow field control method, which is characterized by comprising the following steps: the method comprises the following steps that a main fresh air unit is installed in an indoor living room, a sub fresh air unit is installed in an indoor bedroom, and the main fresh air unit and the sub fresh air unit both have an internal circulation working mode and an external circulation working mode; detecting the indoor and outdoor air quality and the opening state of the bedroom door, and then detecting whether the bedroom door is opened or not, and the PM2.5 value and CO in the air2Concentration value pair main fresh air unit and sub fresh airAnd controlling the internal and external circulation modes of the unit. Compared with the prior art, the invention has the advantages that: through installing main fresh air unit in indoor living room, install sub fresh air unit in indoor bedroom, through detecting indoor, outdoor air quality to and the state of opening of bedroom door, then carry out nimble switching control through the indoor cycle mode and the outdoor cycle module to main fresh air unit and sub fresh air unit to can accurate purify indoor air fast.

Description

Whole-house pipeless type air flow field control method
Technical Field
The invention relates to a full-house pipeless type air flow field control method.
Background
The technical scheme of indoor air purification and new trend system relies on single host computer work at present generally, will open when the host computer detects the air quality problem and purify or the new trend system, indoor formation an inner loop or outer endless flow field reach the purpose of quick clean room air. However, because the indoor room layouts are different, the flow field formed indoors by the working mode of a single host is large in limitation, the host usually has a rapid purification effect only for the room in which the host is placed, the overall space purification speed is low for the whole room, the targeted purification of small areas cannot be realized, and a fresh air system similar to the multi-room layout of the central air conditioner cannot meet the rapid purification requirements of indoor air particles and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a full-house pipeless type air flow field control method capable of accurately and quickly purifying indoor air in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a whole-house pipeless type air flow field control method is characterized in that: the method comprises the following steps that a main fresh air unit is installed in an indoor living room, a sub fresh air unit is installed in an indoor bedroom, and the main fresh air unit and the sub fresh air unit both have an internal circulation working mode and an external circulation working mode; detect indoor, outdoor air quality to and the state of opening of bedroom door, then control main fresh air unit and the mode of son fresh air unit through following mode:
if the bedroom door is opened, the PM2.5 value in the indoor air is smaller than a first threshold value, the PM2.5 value of the outdoor air is smaller than the first threshold value, and the first threshold value is 70ug/m3～80ug/m3The main fresh air handling unit and the sub fresh air handling units work in an external circulation working mode;
if the bedroom door is opened, the PM2.5 value in the indoor air is more than or equal to a first threshold value which is 70ug/m3～80ug/m3The main fresh air handling unit and the sub fresh air handling units work in an internal circulation working mode;
if the bedroom door is opened, the PM2.5 value in the outdoor air is more than or equal to a first threshold value which is 70ug/m3～80ug/m3The main fresh air handling unit and the sub fresh air handling units work in an internal circulation working mode;
CO in outdoor air if the bedroom door is closed2The concentration value is greater than or equal to a second threshold value, the second threshold value is 480 ppm-520 ppm, and the main fresh air handling unit and the sub fresh air handling units work in an external circulation working mode;
CO in outdoor air if the bedroom door is closed2The concentration value is smaller than a second threshold value, the second threshold value is 480 ppm-520 ppm, and the main fresh air handling unit and the sub fresh air handling units work in an internal circulation working mode.
As an improvement, when a main fresh air handling unit is just started, firstly judging whether the shutdown time of the main fresh air handling unit exceeds six hours, if so, firstly operating the main fresh air handling unit for 5 minutes according to an external circulation working mode, then detecting the indoor and outdoor air quality and the opening state of a bedroom door, and controlling the working mode of the main fresh air handling unit;
when the sub-fresh air handling unit is just opened, whether the shutdown time of the sub-fresh air handling unit exceeds six hours is judged, if yes, the sub-fresh air handling unit works for 5 minutes according to an external circulation working mode, then the indoor and outdoor air quality and the opening state of a bedroom door are detected, and the working mode of the main fresh air handling unit is controlled.
The improvement is carried out, under the internal circulation working mode and the external circulation working mode, the air inlet fans and the air exhaust fans of the main fresh air unit and the sub fresh air unit are both provided with a three-gear air speed mode, wherein 1 gear is a low-speed mute gear, 2 gears are a medium-speed gear, and 3 gears are high-speed gears;
when a main fresh air handling unit is just started, if the shutdown time of the main fresh air handling unit exceeds six hours, the main fresh air handling unit firstly works for 5 minutes according to an external circulation working mode and an air inlet fan and an air exhaust fan according to a 3 rd gear, and then the main fresh air handling unit is switched into a first sub-control flow, and if the shutdown time of the main fresh air handling unit does not exceed six hours, the main fresh air handling unit is directly switched into the first sub-control flow;
when a sub fresh air handling unit is just started, if the shutdown time of the sub fresh air handling unit exceeds six hours, the sub fresh air handling unit firstly works for 5 minutes according to the external circulation working mode, the air inlet fan and the air exhaust fan according to the 3 rd gear, and then the sub fresh air handling unit is switched into a second sub control flow, and if the shutdown time of the sub fresh air handling unit does not exceed six hours, the sub fresh air handling unit is directly switched into the second sub control flow;
the first sub-control flow includes the following steps:
step 1-1, detecting the opening state of the bedroom door, entering step 1-2 if the bedroom door is opened, and entering step 1-7 if the bedroom door is closed;
step 1-2, detecting the concentration of formaldehyde in a living room and a bedroom, if the concentration of formaldehyde in the living room or the bedroom is greater than or equal to a third threshold value, and the third threshold value is 0.03 ppm-0.06 ppm, enabling a main fresh air unit to work according to an external circulation working mode, an air inlet fan and an air exhaust fan to work according to a 3 rd gear, and enabling a sub fresh air unit to work according to the external circulation working mode, and enabling the air inlet fan and the air exhaust fan to work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-2, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-3;
step 1-3, detecting the concentration of carbon dioxide in a living room and a bedroom, and if the concentration of carbon dioxide in the living room or the bedroom is greater than or equal to a second threshold value which is 480 ppm-520 ppm, enabling a main fresh air unit to work for 15-25 minutes according to an external circulation working mode and an air inlet fan and an air exhaust fan and then turning to 1 gear to work; the sub-fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to 2 nd gear for 15-25 minutes and then work by 1 gear; after delaying the fourth threshold value, returning to the step 1-3, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-4;
step 1-4, detecting whether the living room and the bedroom are emptyPM2.5 value in air, if PM2.5 value in air of living room or bedroom is greater than or equal to first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-4, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-5;
step 1-5, detecting a PM2.5 value in outdoor air, wherein if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; after delaying the fourth threshold value, returning to the step 1-5, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-6;
step 1-6, the main fresh air handling unit works according to an external circulation working mode, an air inlet fan 2 gear and an air exhaust fan 1 gear; the sub-fresh air handling unit works according to an external circulation working mode, an air inlet fan 1 gear and an air exhaust fan 2 gear; after delaying the fifth threshold, returning to the step 1-1, wherein the fifth threshold is 3-6 minutes;
1-7, detecting the concentration of formaldehyde in a living room, and if the concentration of formaldehyde in the living room is greater than or equal to a third threshold value which is 0.03-0.06 ppm, enabling the main fresh air handling unit to work according to an external circulation working mode and the air inlet fan and the air exhaust fan to work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-7, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-8;
step 1-8, detecting the concentration of carbon dioxide in the air of the living room, and if the concentration of carbon dioxide in the air of the living room is greater than or equal to a second threshold value which is 480-520 ppm, enabling the main fresh air handling unit to work according to an external circulation working mode, and enabling the air inlet fan and the air exhaust fan to work according to 2 nd gear for 15-25 minutes and then turning to 1 st gear for work; after delaying the fourth threshold value, returning to the step 1-8, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-9;
step 1-9, detecting a PM2.5 value in the air of the living room, wherein if the PM2.5 value in the air of the living room is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-9, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-10;
step 1-10, detecting a PM2.5 value in outdoor air, wherein if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; after delaying the fourth threshold value, returning to the step 1-10, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-11;
step 1-11, the main fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; after delaying the fifth threshold, returning to the step 1-1, wherein the fifth threshold is 3-6 minutes;
the sub-control flow II comprises the following steps:
step 2-1, detecting the opening state of the bedroom door, entering step 2-2 if the bedroom door is opened, and entering step 2-7 if the bedroom door is closed;
2-2, detecting the concentration of formaldehyde in the living room and the bedroom, if the concentration of formaldehyde in the living room or the bedroom is greater than or equal to a third threshold value, and the third threshold value is 0.03 ppm-0.06 ppm, enabling the main fresh air unit to work according to an external circulation working mode, the air inlet fan and the air exhaust fan to work according to the 3 rd gear, and enabling the sub fresh air units to work according to the external circulation working mode, and the air inlet fan and the air exhaust fan to work according to the 3 rd gear; after delaying the fourth threshold, returning to the step 2-2, wherein the fourth threshold is 30-120 seconds; otherwise, entering step 2-3;
step 2-3, detecting the concentration of carbon dioxide in the living room and the bedroom, if the concentration of carbon dioxide in the living room or the bedroom is greater than or equal to a second threshold value which is 480 ppm-520 ppm, enabling the main fresh air unit to work in a 2 nd gear, and turning to 1 st gear after the air inlet fan and the air exhaust fan all work for 15-25 minutes according to an external circulation working mode; the sub-fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to 2 nd gear for 15-25 minutes and then work by 1 gear; after delaying the fourth threshold value, returning to the step 2-3, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-4;
step 2-4, detecting PM2.5 values in air of the living room and the bedroom, and if the PM2.5 values in air of the living room or the bedroom are larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 2-4, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-5;
step 2-5, detecting a PM2.5 value in the outdoor air, wherein if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; after delaying the fourth threshold value, returning to the step 2-5, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-6;
step 2-6, the main fresh air handling unit works according to an external circulation working mode, an air inlet fan 2 gear and an air exhaust fan 1 gear; the sub-fresh air handling unit works according to an external circulation working mode, an air inlet fan 1 gear and an air exhaust fan 2 gear; after delaying the fifth threshold, returning to the step 2-1, wherein the fifth threshold is 3-6 minutes;
step 2-7, detecting the concentration of formaldehyde in the bedroom, wherein if the concentration of formaldehyde in the bedroom is greater than or equal to a third threshold value, and the third threshold value is 0.03 ppm-0.06 ppm, the sub-main fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 2-7, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-8;
step 2-8, detecting the concentration of carbon dioxide in the air in the bedroom, and if the concentration of carbon dioxide in the air in the bedroom is greater than or equal to a second threshold value which is 480 ppm-520 ppm, enabling the sub fresh air handling unit to work according to an external circulation working mode, and enabling the air inlet fan and the air exhaust fan to work for 15-25 minutes according to the 2 nd gear and then turning to the 1 st gear for work; after delaying the fourth threshold value, returning to the step 2-8, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-9;
step 2-9, detecting a PM2.5 value in the air of the bedroom, and if the PM2.5 value in the air of the bedroom is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3The sub-fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 2-9, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-10;
step 2-10, detecting a PM2.5 value in outdoor air, and if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3The sub-fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; after delaying the fourth threshold value, returning to the step 2-10, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-11;
step 2-11, the sub-fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; and (5) after delaying the fifth threshold, returning to the step 2-1, wherein the fifth threshold is 3-6 minutes.
Compared with the prior art, the invention has the advantages that: through installing main fresh air unit in indoor living room, install sub fresh air unit in indoor bedroom, through detecting indoor, outdoor air quality to and the state of opening of bedroom door, then carry out nimble switching control through the indoor cycle mode and the outdoor cycle module to main fresh air unit and sub fresh air unit to can accurate purify indoor air fast.
Drawings
Fig. 1 is a flow chart of the working mode of the main fresh air handling unit in the embodiment of the present invention.
Fig. 2 is a flowchart of the operation mode of the sub-fresh air handling unit according to the embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The invention provides a whole-house pipeless type air flow field control method, which is characterized in that a main fresh air unit is installed in an indoor living room, a sub fresh air unit is installed in an indoor bedroom, and the main fresh air unit and the sub fresh air unit both have an internal circulation working mode and an external circulation working mode;
the working modes of the main fresh air handling unit and the sub fresh air handling units have the following 5 states:
in the first state, the bedroom door is opened, the PM2.5 value in indoor air is smaller than a first threshold value, the PM2.5 value of outdoor air is smaller than the first threshold value, the first threshold value is 70ug/m 3-80 ug/m3, in the embodiment, the first threshold value is 75ug/m3, and the main fresh air unit and the sub fresh air units work in an external circulation working mode;
at the moment, the main fresh air unit has more air inlet and less air exhaust, so that the living room is in a positive pressure state, the sub fresh air units have less air inlet and more air exhaust, so that the bedroom is in a negative pressure state, the living room is in a positive pressure state, and the bedroom is in a negative pressure state, so that a whole room flowing wind field is formed through the passage of the walkway and the door;
in the second state, the bedroom door is opened, the PM2.5 value in the indoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m 3-80 ug/m3, in the embodiment, the first threshold value is 75ug/m3, and the main fresh air handling unit and the sub fresh air handling units work in an inner circulation working mode;
at the moment, the air in and out of the living room is circulated uniformly, the pressure is maintained, the air in and out of the bedroom is circulated uniformly, the pressure is maintained, and the living room and the bedroom are purified extremely under the condition that the door is opened;
and in the third state, the bedroom door is opened, the PM2.5 value in the outdoor air is more than or equal to a first threshold value which is 70ug/m3～80ug/m3The main fresh air handling unit and the sub fresh air handling units work in an internal circulation working mode; the air in and out of the living room is circulated uniformly, the pressure is maintained, the air in and out of the bedroom is circulated uniformly, and the pressure is maintained;
state four, the bedroom door is closed, and CO is in the outdoor air2The concentration value is greater than or equal to a second threshold value which is 480-520 ppm, and the main fresh air handling unitThe sub-fresh air handling units work in an external circulation working mode;
CO in outdoor air if the bedroom door is closed2The concentration value is smaller than a second threshold value, the second threshold value is 480 ppm-520 ppm, and the main fresh air handling unit and the sub fresh air handling units work in an internal circulation working mode.
In order to more accurately control the working modes of the main fresh air handling unit and the sub fresh air handling units, the main fresh air handling unit and the sub fresh air handling units are in an inner circulation working mode and an outer circulation working mode, air inlet fans and air outlet fans of the main fresh air handling unit and the sub fresh air handling units are respectively provided with three wind speeds, wherein the 1 gear is a low-speed mute gear, the 2 gear is a medium-speed gear, and the 3 gear is a high-speed gear; when a main fresh air handling unit is just started, firstly judging whether the shutdown time of the main fresh air handling unit exceeds six hours, if so, firstly, working the main fresh air handling unit for 5 minutes according to an external circulation working mode and an air inlet fan and an air exhaust fan according to a 3 rd gear, and then switching to a first sub-control flow, and if the shutdown time of the main fresh air handling unit does not exceed six hours, directly switching to the first sub-control flow, as shown in figure 1;
when a sub-fresh air handling unit is just started, firstly judging whether the shutdown time of the sub-fresh air handling unit exceeds six hours, if so, firstly working the sub-fresh air handling unit for 5 minutes according to an external circulation working mode and an air inlet fan and an air exhaust fan according to a 3 rd gear, and then switching to a sub-control flow II, and if the shutdown time of the sub-fresh air handling unit does not exceed six hours, directly switching to the sub-control flow II, and referring to fig. 2;
the first neutron control process comprises the following steps:
step 1-1, detecting the opening state of the bedroom door, entering step 1-2 if the bedroom door is opened, and entering step 1-7 if the bedroom door is closed;
step 1-2, detecting the concentration of formaldehyde in a living room and a bedroom, if the concentration of formaldehyde in the living room or the bedroom is greater than or equal to a third threshold value, and the third threshold value is 0.03 ppm-0.06 ppm, enabling a main fresh air unit to work according to an external circulation working mode, an air inlet fan and an air exhaust fan to work according to a 3 rd gear, and enabling a sub fresh air unit to work according to the external circulation working mode, and enabling the air inlet fan and the air exhaust fan to work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-2, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-3;
step 1-3, detecting the concentration of carbon dioxide in a living room and a bedroom, and if the concentration of carbon dioxide in the living room or the bedroom is greater than or equal to a second threshold value which is 480 ppm-520 ppm, enabling a main fresh air unit to work for 15-25 minutes according to an external circulation working mode and an air inlet fan and an air exhaust fan and then turning to 1 gear to work; the sub-fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to 2 nd gear for 15-25 minutes and then work by 1 gear; after delaying the fourth threshold value, returning to the step 1-3, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-4;
step 1-4, detecting PM2.5 values in air of a living room and a bedroom, and if the PM2.5 values in air of the living room or the bedroom are larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-4, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-5;
step 1-5, detecting a PM2.5 value in outdoor air, wherein if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; after delaying the fourth threshold value, returning to the step 1-5, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-6;
step 1-6, the main fresh air handling unit works according to an external circulation working mode, an air inlet fan 2 gear and an air exhaust fan 1 gear; the sub-fresh air handling unit works according to an external circulation working mode, an air inlet fan 1 gear and an air exhaust fan 2 gear; after delaying the fifth threshold, returning to the step 1-1, wherein the fifth threshold is 3-6 minutes;
1-7, detecting the concentration of formaldehyde in a living room, and if the concentration of formaldehyde in the living room is greater than or equal to a third threshold value which is 0.03-0.06 ppm, enabling the main fresh air handling unit to work according to an external circulation working mode and the air inlet fan and the air exhaust fan to work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-7, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-8;
step 1-8, detecting the concentration of carbon dioxide in the air of the living room, and if the concentration of carbon dioxide in the air of the living room is greater than or equal to a second threshold value which is 480-520 ppm, enabling the main fresh air handling unit to work according to an external circulation working mode, and enabling the air inlet fan and the air exhaust fan to work according to 2 nd gear for 15-25 minutes and then turning to 1 st gear for work; after delaying the fourth threshold value, returning to the step 1-8, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-9;
step 1-9, detecting a PM2.5 value in the air of the living room, wherein if the PM2.5 value in the air of the living room is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-9, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-10;
step 1-10, detecting a PM2.5 value in outdoor air, wherein if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; after delaying the fourth threshold value, returning to the step 1-10, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-11;
step 1-11, the main fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; after delaying the fifth threshold, returning to the step 1-1, wherein the fifth threshold is 3-6 minutes;
wherein, the sub-control flow II comprises the following steps:
step 2-1, detecting the opening state of the bedroom door, entering step 2-2 if the bedroom door is opened, and entering step 2-7 if the bedroom door is closed;
2-2, detecting the concentration of formaldehyde in the living room and the bedroom, if the concentration of formaldehyde in the living room or the bedroom is greater than or equal to a third threshold value, and the third threshold value is 0.03 ppm-0.06 ppm, enabling the main fresh air unit to work according to an external circulation working mode, the air inlet fan and the air exhaust fan to work according to the 3 rd gear, and enabling the sub fresh air units to work according to the external circulation working mode, and the air inlet fan and the air exhaust fan to work according to the 3 rd gear; after delaying the fourth threshold, returning to the step 2-2, wherein the fourth threshold is 30-120 seconds; otherwise, entering step 2-3;
step 2-3, detecting the concentration of carbon dioxide in the living room and the bedroom, if the concentration of carbon dioxide in the living room or the bedroom is greater than or equal to a second threshold value which is 480 ppm-520 ppm, enabling the main fresh air unit to work in a 2 nd gear, and turning to 1 st gear after the air inlet fan and the air exhaust fan all work for 15-25 minutes according to an external circulation working mode; the sub-fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to 2 nd gear for 15-25 minutes and then work by 1 gear; after delaying the fourth threshold value, returning to the step 2-3, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-4;
step 2-4, detecting PM2.5 values in air of the living room and the bedroom, and if the PM2.5 values in air of the living room or the bedroom are larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 2-4, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-5;
step 2-5, detecting a PM2.5 value in the outdoor air, wherein if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; after delaying the fourth threshold value, returning to the step 2-5, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-6;
step 2-6, the main fresh air handling unit works according to an external circulation working mode, an air inlet fan 2 gear and an air exhaust fan 1 gear; the sub-fresh air handling unit works according to an external circulation working mode, an air inlet fan 1 gear and an air exhaust fan 2 gear; after delaying the fifth threshold, returning to the step 2-1, wherein the fifth threshold is 3-6 minutes;
step 2-7, detecting the concentration of formaldehyde in the bedroom, wherein if the concentration of formaldehyde in the bedroom is greater than or equal to a third threshold value, and the third threshold value is 0.03 ppm-0.06 ppm, the sub-main fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 2-7, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-8;
step 2-8, detecting the concentration of carbon dioxide in the air in the bedroom, and if the concentration of carbon dioxide in the air in the bedroom is greater than or equal to a second threshold value which is 480 ppm-520 ppm, enabling the sub fresh air handling unit to work according to an external circulation working mode, and enabling the air inlet fan and the air exhaust fan to work for 15-25 minutes according to the 2 nd gear and then turning to the 1 st gear for work; after delaying the fourth threshold value, returning to the step 2-8, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-9;
step 2-9, detecting a PM2.5 value in the air of the bedroom, and if the PM2.5 value in the air of the bedroom is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3The sub-fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 2-9, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-10;
step 2-10, detecting a PM2.5 value in outdoor air, and if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3The sub-fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; after delaying the fourth threshold value, returning to the step 2-10, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-11;
step 2-11, the sub-fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; and (5) after delaying the fifth threshold, returning to the step 2-1, wherein the fifth threshold is 3-6 minutes.

Claims (3)

1. A whole-house pipeless type air flow field control method is characterized in that: the method comprises the following steps that a main fresh air unit is installed in an indoor living room, a sub fresh air unit is installed in an indoor bedroom, and the main fresh air unit and the sub fresh air unit both have an internal circulation working mode and an external circulation working mode; detect indoor, outdoor air quality to and the state of opening of bedroom door, then control main fresh air unit and the mode of son fresh air unit through following mode:
if the bedroom door is opened, the PM2.5 value in the indoor air is smaller than a first threshold value, the PM2.5 value of the outdoor air is smaller than the first threshold value, and the first threshold value is 70ug/m3～80ug/m3The main fresh air handling unit and the sub fresh air handling units work in an external circulation working mode;
if the bedroom door is opened, the PM2.5 value in the indoor air is more than or equal to a first threshold value which is 70ug/m3～80ug/m3The main fresh air handling unit and the sub fresh air handling units work in an internal circulation working mode;
if the bedroom door is opened, the PM2.5 value in the outdoor air is more than or equal to a first threshold value which is 70ug/m3～80ug/m3The main fresh air handling unit and the sub fresh air handling units work in an internal circulation working mode;
CO in outdoor air if the bedroom door is closed2The concentration value is greater than or equal to a second threshold value, the second threshold value is 480 ppm-520 ppm, and the main fresh air handling unit and the sub fresh air handling units work in an external circulation working mode;
CO in outdoor air if the bedroom door is closed2The concentration value is smaller than a second threshold value, the second threshold value is 480 ppm-520 ppm, and the main fresh air handling unit and the sub fresh air handling units work in an internal circulation working mode.
2. The method of claim 1, wherein: when the main fresh air handling unit is just started, firstly judging whether the shutdown time of the main fresh air handling unit exceeds six hours, if so, firstly operating the main fresh air handling unit for 5 minutes according to an external circulation working mode, then detecting the indoor and outdoor air quality and the opening state of a bedroom door, and controlling the working mode of the main fresh air handling unit;
when the sub-fresh air handling unit is just opened, whether the shutdown time of the sub-fresh air handling unit exceeds six hours is judged, if yes, the sub-fresh air handling unit works for 5 minutes according to an external circulation working mode, then the indoor and outdoor air quality and the opening state of a bedroom door are detected, and the working mode of the main fresh air handling unit is controlled.
3. The method of claim 2, wherein the method further comprises: under the internal circulation working mode and the external circulation working mode of the main fresh air unit and the sub fresh air units, the air inlet fans and the air outlet fans of the main fresh air unit and the sub fresh air units are respectively provided with a three-gear air speed mode, wherein the 1 gear is a low-speed mute gear, the 2 gear is a medium-speed gear, and the 3 gear is a high-speed gear;
when a main fresh air handling unit is just started, if the shutdown time of the main fresh air handling unit exceeds six hours, the main fresh air handling unit firstly works for 5 minutes according to an external circulation working mode and an air inlet fan and an air exhaust fan according to a 3 rd gear, and then the main fresh air handling unit is switched into a first sub-control flow, and if the shutdown time of the main fresh air handling unit does not exceed six hours, the main fresh air handling unit is directly switched into the first sub-control flow;
when a sub fresh air handling unit is just started, if the shutdown time of the sub fresh air handling unit exceeds six hours, the sub fresh air handling unit firstly works for 5 minutes according to the external circulation working mode, the air inlet fan and the air exhaust fan according to the 3 rd gear, and then the sub fresh air handling unit is switched into a second sub control flow, and if the shutdown time of the sub fresh air handling unit does not exceed six hours, the sub fresh air handling unit is directly switched into the second sub control flow;
the first sub-control flow includes the following steps:
step 1-1, detecting the opening state of the bedroom door, entering step 1-2 if the bedroom door is opened, and entering step 1-7 if the bedroom door is closed;
step 1-2, detecting the concentration of formaldehyde in a living room and a bedroom, if the concentration of formaldehyde in the living room or the bedroom is greater than or equal to a third threshold value, and the third threshold value is 0.03 ppm-0.06 ppm, enabling a main fresh air unit to work according to an external circulation working mode, an air inlet fan and an air exhaust fan to work according to a 3 rd gear, and enabling a sub fresh air unit to work according to the external circulation working mode, and enabling the air inlet fan and the air exhaust fan to work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-2, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-3;
step 1-3, detecting the concentration of carbon dioxide in a living room and a bedroom, and if the concentration of carbon dioxide in the living room or the bedroom is greater than or equal to a second threshold value which is 480 ppm-520 ppm, enabling a main fresh air unit to work for 15-25 minutes according to an external circulation working mode and an air inlet fan and an air exhaust fan and then turning to 1 gear to work; the sub-fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to 2 nd gear for 15-25 minutes and then work by 1 gear; after delaying the fourth threshold value, returning to the step 1-3, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-4;
step 1-4, detecting PM2.5 values in air of a living room and a bedroom, and if the PM2.5 values in air of the living room or the bedroom are larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-4, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-5;
step 1-5, detecting a PM2.5 value in outdoor air, wherein if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; after delaying the fourth threshold value, returning to the step 1-5, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-6;
step 1-6, the main fresh air handling unit works according to an external circulation working mode, an air inlet fan 2 gear and an air exhaust fan 1 gear; the sub-fresh air handling unit works according to an external circulation working mode, an air inlet fan 1 gear and an air exhaust fan 2 gear; after delaying the fifth threshold, returning to the step 1-1, wherein the fifth threshold is 3-6 minutes;
1-7, detecting the concentration of formaldehyde in a living room, and if the concentration of formaldehyde in the living room is greater than or equal to a third threshold value which is 0.03-0.06 ppm, enabling the main fresh air handling unit to work according to an external circulation working mode and the air inlet fan and the air exhaust fan to work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-7, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-8;
step 1-8, detecting the concentration of carbon dioxide in the air of the living room, and if the concentration of carbon dioxide in the air of the living room is greater than or equal to a second threshold value which is 480-520 ppm, enabling the main fresh air handling unit to work according to an external circulation working mode, and enabling the air inlet fan and the air exhaust fan to work according to 2 nd gear for 15-25 minutes and then turning to 1 st gear for work; after delaying the fourth threshold value, returning to the step 1-8, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-9;
step 1-9, detecting a PM2.5 value in the air of the living room, wherein if the PM2.5 value in the air of the living room is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 1-9, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-10;
step 1-10, detecting a PM2.5 value in outdoor air, wherein if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; after delaying the fourth threshold value, returning to the step 1-10, wherein the fourth threshold value is 30-120 seconds; otherwise, entering the step 1-11;
step 1-11, the main fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; after delaying the fifth threshold, returning to the step 1-1, wherein the fifth threshold is 3-6 minutes;
the sub-control flow II comprises the following steps:
step 2-1, detecting the opening state of the bedroom door, entering step 2-2 if the bedroom door is opened, and entering step 2-7 if the bedroom door is closed;
2-2, detecting the concentration of formaldehyde in the living room and the bedroom, if the concentration of formaldehyde in the living room or the bedroom is greater than or equal to a third threshold value, and the third threshold value is 0.03 ppm-0.06 ppm, enabling the main fresh air unit to work according to an external circulation working mode, the air inlet fan and the air exhaust fan to work according to the 3 rd gear, and enabling the sub fresh air units to work according to the external circulation working mode, and the air inlet fan and the air exhaust fan to work according to the 3 rd gear; after delaying the fourth threshold, returning to the step 2-2, wherein the fourth threshold is 30-120 seconds; otherwise, entering step 2-3;
step 2-3, detecting the concentration of carbon dioxide in the living room and the bedroom, if the concentration of carbon dioxide in the living room or the bedroom is greater than or equal to a second threshold value which is 480 ppm-520 ppm, enabling the main fresh air unit to work in a 2 nd gear, and turning to 1 st gear after the air inlet fan and the air exhaust fan all work for 15-25 minutes according to an external circulation working mode; the sub-fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to 2 nd gear for 15-25 minutes and then work by 1 gear; after delaying the fourth threshold value, returning to the step 2-3, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-4;
step 2-4, detecting PM2.5 values in air of the living room and the bedroom, and if the PM2.5 values in air of the living room or the bedroom are larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 2-4, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-5;
step 2-5, detecting a PM2.5 value in the outdoor air, wherein if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3Then the main fresh air handling unit works according to the internal circulation working mode and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; the sub-fresh air handling unit works according to an internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; after delaying the fourth thresholdReturning to the step 2-5, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-6;
step 2-6, the main fresh air handling unit works according to an external circulation working mode, an air inlet fan 2 gear and an air exhaust fan 1 gear; the sub-fresh air handling unit works according to an external circulation working mode, an air inlet fan 1 gear and an air exhaust fan 2 gear; after delaying the fifth threshold, returning to the step 2-1, wherein the fifth threshold is 3-6 minutes;
step 2-7, detecting the concentration of formaldehyde in the bedroom, wherein if the concentration of formaldehyde in the bedroom is greater than or equal to a third threshold value, and the third threshold value is 0.03 ppm-0.06 ppm, the sub-main fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 2-7, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-8;
step 2-8, detecting the concentration of carbon dioxide in the air in the bedroom, and if the concentration of carbon dioxide in the air in the bedroom is greater than or equal to a second threshold value which is 480 ppm-520 ppm, enabling the sub fresh air handling unit to work according to an external circulation working mode, and enabling the air inlet fan and the air exhaust fan to work for 15-25 minutes according to the 2 nd gear and then turning to the 1 st gear for work; after delaying the fourth threshold value, returning to the step 2-8, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-9;
step 2-9, detecting a PM2.5 value in the air of the bedroom, and if the PM2.5 value in the air of the bedroom is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3The sub-fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 3 rd gear; after delaying the fourth threshold value, returning to the step 2-9, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-10;
step 2-10, detecting a PM2.5 value in outdoor air, and if the PM2.5 value in the outdoor air is larger than or equal to a first threshold value, the first threshold value is 70ug/m3～80ug/m3The sub-fresh air handling unit works according to the internal circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 2 nd gear; after delaying the fourth threshold value, returning to the step 2-10, wherein the fourth threshold value is 30-120 seconds; otherwise, entering step 2-11;
step 2-11, the sub-fresh air handling unit works according to an external circulation working mode, and the air inlet fan and the air exhaust fan all work according to the 1 st gear; and (5) after delaying the fifth threshold, returning to the step 2-1, wherein the fifth threshold is 3-6 minutes.
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CN113669881B (en) * 2021-08-25 2022-11-18 海尔(深圳)研发有限责任公司 Method and device for controlling fresh air machine and intelligent fresh air machine
WO2024041063A1 (en) * 2022-08-22 2024-02-29 青岛海尔空调器有限总公司 Method and apparatus for controlling fresh air conditioning system, and fresh air conditioning system

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