CN112460769A - Fresh air system, control method and device thereof, storage medium and processor - Google Patents

Fresh air system, control method and device thereof, storage medium and processor Download PDF

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Publication number
CN112460769A
CN112460769A CN202011301414.XA CN202011301414A CN112460769A CN 112460769 A CN112460769 A CN 112460769A CN 202011301414 A CN202011301414 A CN 202011301414A CN 112460769 A CN112460769 A CN 112460769A
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China
Prior art keywords
fresh air
valve
controlling
air inlet
concentration
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CN202011301414.XA
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Chinese (zh)
Inventor
陈会阳
于艳翠
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN202011301414.XA priority Critical patent/CN112460769A/en
Publication of CN112460769A publication Critical patent/CN112460769A/en
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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
    • 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
    • F24F2110/10—Temperature
    • 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
    • F24F2110/70—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 discloses a control method and a control device of a fresh air system, the fresh air system, a storage medium and a processor, wherein a fresh air channel of a fresh air fan in the fresh air system comprises a first channel and a second channel; a first valve is arranged in the first channel, and a filtering unit and a second valve are arranged in the second channel; the control method of the fresh air system comprises the following steps: under the condition that a user is in a room, acquiring indoor air quality parameters and acquiring fresh air inlet environmental parameters of the fresh air fan; and controlling the opening and closing of the first valve and the second valve and controlling the running state of the fresh air machine according to the indoor air quality parameter and the fresh air inlet environment parameter. This scheme, through making the size of the new trend system dynamic adjustment entering indoor fresh air volume and new trend get into indoor way, promote the regulating effect of new trend system to indoor air quality.

Description

Fresh air system, control method and device thereof, storage medium and processor
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a control method and device of a fresh air system, the fresh air system, a storage medium and a processor, in particular to a fresh air control method and device, the fresh air system, the storage medium and the processor for dynamic air volume adjustment.
Background
As people pay more and more attention to health, the invisible air quality gradually gets more and more attention. When the air conditioner is used in winter and summer, the door and the window are generally required to be closed for saving energy, so that outdoor fresh air can hardly enter the room, and indoor CO can hardly enter the room2The health of people is affected by the increasing content of VOC (volatile organic compounds) and indoor particulate matters. This problem can be solved in the windowing, but can't know the amount of wind from the air that door and window got into, too much new trend can let the air conditioner in the room consume energy seriously, too much new trend also can cause the inhomogeneous scheduling problem of room internal temperature, and the index of the new trend of not handling does not accord with human health demand yet moreover.
In the relevant scheme, the fresh air system is mainly manually opened, but the indoor user is difficult to accurately judge the air quality, and a set of control system capable of automatically opening and closing is very important. The sensors of a common control system are all placed indoors and used for measuring indoor air indexes, and whether a fresh air system is started or not is determined according to the air indexes and a set value. However, the air quality of the fresh air changes every day, which gives a great uncertainty to the control system.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention aims to provide a control method and a control device of a fresh air system, the fresh air system, a storage medium and a processor, so as to solve the problem that the fresh air system is not ideal enough in adjusting the indoor air quality, and achieve the effect of improving the adjusting effect of the fresh air system on the indoor air quality by dynamically adjusting the fresh air volume entering the room and the way of the fresh air entering the room.
The invention provides a control method of a fresh air system, wherein a fresh air channel of a fresh air fan in the fresh air system comprises a first channel and a second channel; a first valve is arranged in the first channel, and a filtering unit and a second valve are arranged in the second channel; the control method of the fresh air system comprises the following steps: under the condition that a user is in a room, acquiring indoor air quality parameters and acquiring fresh air inlet environmental parameters of the fresh air fan; and controlling the opening and closing of the first valve and the second valve and controlling the running state of the fresh air machine according to the indoor air quality parameter and the fresh air inlet environment parameter.
In some embodiments, the indoor air quality parameter comprises: indoor CO2Concentration; according to indoor air quality parameter with new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state includes: CO in the room2And under the condition that the concentration is greater than a first set concentration, controlling the opening and closing of the first valve and the second valve according to the fresh air inlet environmental parameter, and controlling the running state of the fresh air fan.
In some embodiments, the fresh air inlet environmental parameter comprises: a fresh air inlet PM 2.5; according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state includes: determining whether the PM2.5 of the fresh air inlet is smaller than a set value; if the PM2.5 of the fresh air inlet is smaller than the set value, continuously controlling the opening and closing of the first valve according to first other parameters in the environment parameters of the fresh air inlet, controlling the second valve to be continuously closed, and continuously controlling the running state of the fresh air fan; and if the PM2.5 of the fresh air inlet is not less than the set value, controlling the first valve to be closed, controlling the second valve to be opened, and controlling the fresh air fan to operate according to the set minimum air volume.
In some embodiments, the fresh air inlet environmental parameter further comprises: fresh air inlet solid particulate matter concentration; according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state still includes: determining whether the concentration of the solid particles at the fresh air inlet is less than a set concentration; if the concentration of the solid particles at the fresh air inlet is less than the set concentration, continuously controlling the opening and closing of the first valve and the second valve according to second other parameters in the environment parameters of the fresh air inlet, and continuously controlling the running state of the fresh air fan; and if the concentration of the solid particles at the fresh air inlet is not less than the set concentration, controlling the first valve to be closed, controlling the second valve to be opened, and controlling the fresh air fan to operate according to the set minimum air volume.
In some embodiments, the fresh air inlet environmental parameter further comprises: fresh air inlet temperature; according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state still includes: determining whether the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is less than the set temperature; if the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is smaller than the set temperature, controlling the first valve to be opened, controlling the second valve to be closed under the condition that the second valve is not closed, and then controlling the fresh air machine to operate according to the set high wind gear; and if the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is not less than the set temperature, controlling the first valve to be opened, controlling the second valve to be closed under the condition that the second valve is not closed, and then controlling the fresh air machine to operate according to the set low wind gear.
In another aspect, the invention provides a control device of a fresh air system, in which a fresh air channel of a fresh air blower in the fresh air system includes a first channel and a second channel; a first valve is arranged in the first channel, and a filtering unit and a second valve are arranged in the second channel; the controlling means of new trend system includes: the acquiring unit is configured to acquire indoor air quality parameters and acquire fresh air inlet environmental parameters of the fresh air fan under the condition that a user is indoors; and the control unit is configured to control the switches of the first valve and the second valve and control the running state of the fresh air fan according to the indoor air quality parameter and the fresh air inlet environment parameter.
In some embodiments, the indoor air quality parameter comprises: indoor CO2Concentration; the control unit, according to indoor air quality parameter with new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state includes: CO in the room2And under the condition that the concentration is greater than a first set concentration, controlling the opening and closing of the first valve and the second valve according to the fresh air inlet environmental parameter, and controlling the running state of the fresh air fan.
In some embodiments, the fresh air inlet environmental parameter comprises: a fresh air inlet PM 2.5; the control unit, according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state includes: determining whether the PM2.5 of the fresh air inlet is smaller than a set value; if the PM2.5 of the fresh air inlet is smaller than the set value, continuously controlling the opening and closing of the first valve according to first other parameters in the environment parameters of the fresh air inlet, controlling the second valve to be continuously closed, and continuously controlling the running state of the fresh air fan; and if the PM2.5 of the fresh air inlet is not less than the set value, controlling the first valve to be closed, controlling the second valve to be opened, and controlling the fresh air fan to operate according to the set minimum air volume.
In some embodiments, the fresh air inlet environmental parameter further comprises: fresh air inlet solid particulate matter concentration; the control unit, according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state still includes: determining whether the concentration of the solid particles at the fresh air inlet is less than a set concentration; if the concentration of the solid particles at the fresh air inlet is less than the set concentration, continuously controlling the opening and closing of the first valve and the second valve according to second other parameters in the environment parameters of the fresh air inlet, and continuously controlling the running state of the fresh air fan; and if the concentration of the solid particles at the fresh air inlet is not less than the set concentration, controlling the first valve to be closed, controlling the second valve to be opened, and controlling the fresh air fan to operate according to the set minimum air volume.
In some embodiments, the fresh air inlet environmental parameter further comprises: fresh air inlet temperature; the control unit, according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state still includes: determining whether the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is less than the set temperature; if the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is smaller than the set temperature, controlling the first valve to be opened, controlling the second valve to be closed under the condition that the second valve is not closed, and then controlling the fresh air machine to operate according to the set high wind gear; and if the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is not less than the set temperature, controlling the first valve to be opened, controlling the second valve to be closed under the condition that the second valve is not closed, and then controlling the fresh air machine to operate according to the set low wind gear.
In another aspect, the present invention provides a fresh air system, including: the control device of the fresh air system.
In accordance with the above method, a further aspect of the present invention provides a storage medium, where the storage medium includes a stored program, and when the program runs, the apparatus where the storage medium is located is controlled to execute the above control method for the fresh air system.
In accordance with the above method, a further aspect of the present invention provides a processor for executing a program, wherein the program executes the above control method for a fresh air system.
Therefore, according to the scheme of the invention, the indoor air state before fresh air treatment is measured, and the fresh air quantity and the fresh air treatment process are controlled according to the indoor air state before fresh air treatment, so that the fresh air system dynamically adjusts the fresh air quantity entering the room and the way of the fresh air entering the room, and the indoor air quality adjusting effect of the fresh air system is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic flow chart diagram illustrating an embodiment of a control method for a fresh air system according to the present invention;
FIG. 2 is a schematic flow chart illustrating an embodiment of a method of the present invention for controlling a fresh air system according to PM2.5 at the fresh air inlet;
FIG. 3 is a schematic flow chart illustrating one embodiment of a method of the present invention for controlling a fresh air system based on the concentration of solid particles at the fresh air inlet;
FIG. 4 is a schematic flow chart illustrating one embodiment of a method of controlling a fresh air system according to a fresh air inlet temperature of the present invention;
FIG. 5 is a schematic structural diagram of an embodiment of a control device of the fresh air system according to the present invention;
FIG. 6 is a schematic structural diagram of an embodiment of a dynamic air volume adjusting fresh air control system;
fig. 7 is a schematic diagram of a fresh air control flow of an embodiment of a fresh air control system with dynamic air volume adjustment.
The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:
1-a filter; 21-a first valve (e.g. valve a); 22-a second valve (e.g. valve B); 3-a variable speed fan; 102-an obtaining unit; 104-control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to an embodiment of the present invention, a control method of a fresh air system is provided, as shown in fig. 1, which is a schematic flow chart of an embodiment of the method of the present invention. The fresh air channel of the fresh air fan in the fresh air system comprises a first channel and a second channel. A first valve is arranged in the first channel (e.g. valve a in the first channel) and a filter unit and a second valve are arranged in the second channel (e.g. filter 1 and valve B in the second channel). The variable speed fan 3 in the fresh air fan is arranged on the rear side of the fresh air channel along the direction from the fresh air inlet to the fresh air outlet, or the variable speed fan 3 is arranged on the fresh air outlet side of the fresh air channel. The control method of the fresh air system comprises the following steps: step S110 and step S120.
In step S110, under the condition that there is a user indoors, an indoor air quality parameter is obtained, and a fresh air inlet environmental parameter of the fresh air machine (i.e., an outdoor environmental parameter at a fresh air inlet of the fresh air machine) is obtained.
In step S120, the switches of the first valve and the second valve are controlled according to the indoor air quality parameter and the fresh air inlet environmental parameter, and the operation state of the fresh air blower is controlled. Of course, the fresh air control system does not operate under the condition that no user exists indoors.
Specifically, whether the fresh air is filtered or not and the air volume are controlled, so that the aim of saving energy is fulfilled, the air conditioner runs at the lowest air volume when the outside air is polluted or the inside and outside temperature difference is large, and runs at the large air volume under the conditions of good outside air and small indoor and outdoor temperature difference. And the air can be filtered when the air is polluted, and is not filtered when the air is fresh, so that the consumption of a filter screen is reduced. And a fresh air channel of the fresh air fan is set into double channels, so that the control is more flexible.
In some embodiments, the indoor air quality parameter comprises: indoor CO2And (4) concentration.
In step S120, the switching of the first valve and the second valve is controlled according to the indoor air quality parameter and the fresh air inlet environmental parameter, and the operation state of the fresh air blower is controlled, including the following first control process or second control process:
the first control process: CO in the room2And under the condition that the concentration is greater than a first set concentration, controlling the opening and closing of the first valve and the second valve according to the fresh air inlet environmental parameter, and controlling the running state of the fresh air fan. A first set concentration, such as set concentration f.
The second control process: CO in the room2And controlling the fresh air system not to run under the condition that the concentration is not greater than the first set concentration.
Specifically, whether the fresh air is filtered or not and the air volume are controlled, and the real-time air quality of outdoor air is mainly considered. After the fresh air control system is started, detecting indoor CO2Concentration n, and judging indoor CO2Whether the concentration n is greater than the set concentration f. If indoor CO2And if the concentration n is greater than the set concentration f, controlling the fresh air inlet temperature t 1. If indoor CO2If the concentration n is not more than the set concentration f, the fresh air control system does not operate.
In some embodiments, the fresh air inlet environmental parameter comprises: fresh air inlet PM2.5 (i.e. PM2.5 at the fresh air inlet).
According to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state includes: and controlling the process of the fresh air system according to PM2.5 at the fresh air inlet.
The following further describes a specific process of controlling the fresh air system according to the PM2.5 at the fresh air inlet, with reference to a flow diagram of an embodiment of controlling the fresh air system according to the PM2.5 at the fresh air inlet in the method of the present invention shown in fig. 2, and may include: step S210 to step S230.
Step S210, determining whether the fresh air inlet PM2.5 is smaller than a set value (for example, a set value b).
And S220, if the PM2.5 of the fresh air inlet is smaller than the set value, continuously controlling the opening and closing of the first valve, controlling the second valve to be continuously closed and continuously controlling the running state of the fresh air fan according to first other parameters in the environment parameters of the fresh air inlet. Under the condition that PM2.5 of the fresh air inlet is smaller than the set value, first other parameters in the environment parameters of the fresh air inlet comprise: fresh air inlet solid particulate matter concentration, fresh air inlet temperature and the like.
And step S230, if the PM2.5 of the fresh air inlet is not less than the set value, controlling the first valve to be closed, controlling the second valve to be opened, and controlling the fresh air fan to operate according to the set minimum air volume.
Specifically, a value P of the PM2.5 of the fresh air inlet is detected, and whether the value P of the PM2.5 of the fresh air inlet is smaller than a set value b or not is judged. If the value P of the PM2.5 of the fresh air inlet is smaller than the set value b, continuing to control according to the concentration of the solid particles at the fresh air inlet. And if the value P of the PM2.5 of the fresh air inlet is not less than the set value B, controlling a second valve (such as a valve B) to be opened.
In some embodiments, the fresh air inlet environmental parameter further comprises: fresh air inlet solid particulate matter concentration (e.g., fresh air inlet solid particulate matter concentration G).
In step S120, controlling the opening and closing of the first valve and the second valve according to the fresh air inlet environmental parameter, and controlling the operation state of the fresh air blower, that is, continuously controlling the opening and closing of the first valve and the second valve according to a first other parameter in the fresh air inlet environmental parameter, and continuously controlling the operation state of the fresh air blower, further includes: and controlling the process of the fresh air system according to the concentration of the solid particles at the fresh air inlet.
Referring to fig. 3, a flow diagram of an embodiment of the method for controlling the fresh air system according to the concentration of the solid particles at the fresh air inlet according to the method of the present invention will be further described, where the specific process of controlling the fresh air system according to the concentration of the solid particles at the fresh air inlet includes: step S310 to step S330.
Step S310, determining whether the concentration of the solid particles at the fresh air inlet is less than a set concentration (such as a set concentration c).
And S320, if the concentration of the solid particles at the fresh air inlet is less than the set concentration, continuously controlling the opening and closing of the first valve and the second valve according to second other parameters in the environment parameters of the fresh air inlet, and continuously controlling the running state of the fresh air fan. Under the condition that fresh air inlet solid particle concentration is less than the set concentration, the other second parameters in the fresh air inlet environmental parameters comprise: fresh air inlet PM2.5, fresh air inlet temperature and the like.
And S330, if the concentration of the solid particles at the fresh air inlet is not less than the set concentration, controlling the first valve to be closed, controlling the second valve to be opened, and controlling the fresh air fan to operate according to the set minimum air volume. The minimum air quantity of the new fan can be the minimum air quantity of the new fan.
Specifically, detect new trend entry solid particle concentration G to judge whether new trend entry solid particle concentration G is less than set concentration c. And if the concentration G of the solid particles at the fresh air inlet is less than the set concentration c, continuing to control according to the temperature of the fresh air inlet. And if the concentration G of the solid particles at the fresh air inlet is not less than the set concentration c, controlling a second valve (such as a valve B) to be opened.
Therefore, when the outdoor air quality is poor, i.e. the PM2.5 is greater than 60 or the solid particles are greater than a certain concentration (e.g. the set concentration c), the air quality is considered to be poor and needs to be filtered, at that time, the first valve (e.g. the valve a)21 is closed, the second valve (e.g. the valve B) is opened, and the air passes through the channel with the filter, and fresh air is purified. When the air quality is poor and the air needs to pass through the filter screen (namely the filter screen of the filter 1), the fan (such as the variable speed fan 3) operates with the minimum air volume, and the air volume only can ensure the minimum sanitary standard of a human body to fresh air, and the aim is to reduce the consumption of the filter.
In some embodiments, the fresh air inlet environmental parameter further comprises: fresh air inlet temperature (e.g., fresh air inlet temperature t 1).
In step S120, controlling the opening and closing of the first valve and the second valve and controlling the operation state of the fresh air blower according to the fresh air inlet environmental parameter, that is, continuously controlling the opening and closing of the first valve and the second valve and continuously controlling the operation state of the fresh air blower according to a first other parameter in the fresh air inlet environmental parameter, or continuously controlling the opening and closing of the first valve and the second valve and continuously controlling the operation state of the fresh air blower according to a second other parameter in the fresh air inlet environmental parameter, further includes: and controlling the process of the fresh air system according to the temperature of the fresh air inlet.
The following further describes a specific process of controlling the fresh air system according to the fresh air inlet temperature, with reference to a flow schematic diagram of an embodiment of controlling the fresh air system according to the fresh air inlet temperature in the method of the present invention shown in fig. 4, and may include: step S410 to step S430.
Step S410, determining whether the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is less than a set temperature (such as a set temperature a). An indoor temperature set point, such as indoor temperature set point t 2.
Step S420, if the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is smaller than the set temperature, the first valve is controlled to be opened, the second valve is controlled to be closed under the condition that the second valve is not closed, and then the fresh air machine is controlled to operate according to the set high wind gear.
And step S430, if the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is not less than the set temperature, controlling the first valve to be opened, controlling the second valve to be closed under the condition that the second valve is not closed, and then controlling the fresh air machine to operate according to the set low wind gear.
Specifically, it is determined whether the absolute value | t1-t2 | of the difference between the fresh air inlet temperature t1 and the indoor temperature set point t2 is less than the set temperature a. If the absolute value | t1-t2 | of the difference between the fresh air inlet temperature t1 and the indoor temperature set point t2 is less than the set temperature a, the variable speed fan 3 of the fresh air system is controlled to operate according to the set high wind speed, and then a first valve (such as a valve A) of the fresh air system is controlled to be opened. If the absolute value | t1-t2 | of the difference between the fresh air inlet temperature t1 and the indoor temperature set point t2 is not less than the set temperature a, the variable speed fan 3 of the fresh air system is controlled to operate according to the set low wind gear, and then a first valve (such as a valve A) of the fresh air system is controlled to be opened.
Therefore, when the quality of air is good, namely PM2.5 is less than 60 or the concentration of solid particles is less than a certain concentration (such as a set concentration c), fresh air can directly enter a room without being filtered, at the moment, the processor can compare the difference between the outdoor air temperature and the indoor temperature, the judgment temperature value of the difference between winter and summer can be set as different parameters, when the difference is less than a set value (such as a set temperature a), the fan is adjusted to operate at a high air flow rate, and when the difference is more than a set value, the damper is adjusted to operate at a low air flow rate. Like this, can reduce the new trend and get into the power consumption of the increase of back air conditioning system, it is little when indoor outer air temperature differs, at this moment the new trend of big amount of wind helps indoor people to have more comfortable more healthy, send into after only the heat transfer with airing exhaust indoor to the new trend that the temperature differs little moreover and do not influence indoor temperature field greatly. When the outdoor air temperature and the indoor air temperature are greatly different, the minimum fresh air requirement of the human body on the fresh air is only required to be conveyed into the room, and therefore energy consumption can be greatly saved.
Through a large amount of tests verification, adopt the technical scheme of this embodiment, through measuring the indoor air state before the new trend is handled, according to the indoor air state before the new trend is handled, the size of the new amount of wind and the process of new trend processing are controlled to, through making the size of the new amount of wind that the dynamic adjustment of new trend system got into indoor and new trend get into indoor way, promote the regulating effect of new trend system to indoor air quality.
According to the embodiment of the invention, the control device of the fresh air system corresponding to the control method of the fresh air system is also provided. Referring to fig. 5, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The fresh air channel of the fresh air fan in the fresh air system comprises a first channel and a second channel. A first valve is arranged in the first channel (e.g. valve a in the first channel) and a filter unit and a second valve are arranged in the second channel (e.g. filter 1 and valve B in the second channel). The variable speed fan 3 in the fresh air fan is arranged on the rear side of the fresh air channel along the direction from the fresh air inlet to the fresh air outlet, or the variable speed fan 3 is arranged on the fresh air outlet side of the fresh air channel. The controlling means of new trend system includes: an acquisition unit 102 and a control unit 104.
The obtaining unit 102 is configured to obtain an indoor air quality parameter and obtain a fresh air inlet environment parameter of the fresh air fan (i.e., an outdoor environment parameter at a fresh air inlet of the fresh air fan) when a user is indoors. The specific functions and processes of the acquiring unit 102 are referred to in step S110.
A control unit 104 configured to control the first valve and the second valve to be opened and closed and control the operation state of the fresh air fan according to the indoor air quality parameter and the fresh air inlet environment parameter. Of course, the fresh air control system does not operate under the condition that no user exists indoors. The specific function and processing of the control unit 104 are referred to in step S120.
Specifically, whether the fresh air is filtered or not and the air volume are controlled, so that the aim of saving energy is fulfilled, the air conditioner runs at the lowest air volume when the outside air is polluted or the inside and outside temperature difference is large, and runs at the large air volume under the conditions of good outside air and small indoor and outdoor temperature difference. And the air can be filtered when the air is polluted, and is not filtered when the air is fresh, so that the consumption of a filter screen is reduced. And a fresh air channel of the fresh air fan is set into double channels, so that the control is more flexible.
In some embodiments, the indoor air quality parameter comprises: indoor CO2And (4) concentration.
The control unit 104 controls the switches of the first valve and the second valve according to the indoor air quality parameter and the fresh air inlet environmental parameter, and controls the operation state of the fresh air blower, including the following first control process or second control process:
the first control process: the control unit 104, in particular also configured to CO within the room2Concentration ofAnd under the condition that the fresh air inlet concentration is higher than a first set concentration, the opening and closing of the first valve and the second valve are controlled according to the fresh air inlet environmental parameters, and the running state of the fresh air fan is controlled. A first set concentration, such as set concentration f.
The second control process: the control unit 104, in particular also configured to CO within the room2And controlling the fresh air system not to run under the condition that the concentration is not greater than the first set concentration.
Specifically, whether the fresh air is filtered or not and the air volume are controlled, and the real-time air quality of outdoor air is mainly considered. After the fresh air control system is started, detecting indoor CO2Concentration n, and judging indoor CO2Whether the concentration n is greater than the set concentration f. If indoor CO2And if the concentration n is greater than the set concentration f, controlling the fresh air inlet temperature t 1. If indoor CO2If the concentration n is not more than the set concentration f, the fresh air control system does not operate.
In some embodiments, the fresh air inlet environmental parameter comprises: fresh air inlet PM2.5 (i.e. PM2.5 at the fresh air inlet).
The control unit 104, according to the fresh air inlet environmental parameter, controls the switches of the first valve and the second valve, and controls the operating state of the fresh air machine, including: according to the process of PM2.5 control new trend system at the new trend entrance, specifically can include:
the control unit 104 is specifically further configured to determine whether the fresh air inlet PM2.5 is smaller than a set value (e.g., a set value b). The specific functions and processes of the control unit 104 are also referred to in step S210.
The control unit 104 is specifically configured to, if the fresh air inlet PM2.5 is smaller than the set value, continue to control the opening and closing of the first valve, and control the second valve to continuously close, and continue to control the operating state of the fresh air blower according to a first other parameter in the fresh air inlet environmental parameters. Under the condition that PM2.5 of the fresh air inlet is smaller than the set value, first other parameters in the environment parameters of the fresh air inlet comprise: fresh air inlet solid particulate matter concentration, fresh air inlet temperature and the like. The specific functions and processes of the control unit 104 are also referred to in step S220.
The control unit 104 is specifically configured to control the first valve to be closed, control the second valve to be opened, and control the fresh air blower to operate according to a set minimum air volume if the fresh air inlet PM2.5 is not less than the set value. The specific function and processing of the control unit 104 are also referred to in step S230.
Specifically, a value P of the PM2.5 of the fresh air inlet is detected, and whether the value P of the PM2.5 of the fresh air inlet is smaller than a set value b or not is judged. If the value P of the PM2.5 of the fresh air inlet is smaller than the set value b, continuing to control according to the concentration of the solid particles at the fresh air inlet. And if the value P of the PM2.5 of the fresh air inlet is not less than the set value B, controlling a second valve (such as a valve B) to be opened.
In some embodiments, the fresh air inlet environmental parameter further comprises: fresh air inlet solid particulate matter concentration (e.g., fresh air inlet solid particulate matter concentration G).
The control unit 104, according to the fresh air inlet environmental parameter, controls the switches of the first valve and the second valve, and controls the operation state of the fresh air blower, that is, according to a first other parameter in the fresh air inlet environmental parameter, continuously controls the switches of the first valve and the second valve, and continuously controls the operation state of the fresh air blower, and further includes: according to new trend entry solid particulate matter concentration control new trend system's process, specifically can include:
the control unit 104 is specifically further configured to determine whether the fresh air inlet solid particulate matter concentration is less than a set concentration (e.g., a set concentration c). The specific functions and processes of the control unit 104 are also referred to in step S310.
The control unit 104 is specifically configured to, if the concentration of the solid particulate matters at the fresh air inlet is less than the set concentration, continuously control the opening and closing of the first valve and the second valve according to a second other parameter of the environmental parameters at the fresh air inlet, and continuously control the operating state of the fresh air fan. Under the condition that fresh air inlet solid particle concentration is less than the set concentration, the other second parameters in the fresh air inlet environmental parameters comprise: fresh air inlet PM2.5, fresh air inlet temperature and the like. The specific functions and processes of the control unit 104 are also referred to in step S320.
The control unit 104 is specifically configured to control the first valve to close, control the second valve to open, and control the fresh air blower to operate according to a set minimum air volume if the concentration of the solid particulate matters at the fresh air inlet is not less than the set concentration. The minimum air quantity of the new fan can be the minimum air quantity of the new fan. The specific functions and processes of the control unit 104 are also referred to in step S330.
Specifically, detect new trend entry solid particle concentration G to judge whether new trend entry solid particle concentration G is less than set concentration c. And if the concentration G of the solid particles at the fresh air inlet is less than the set concentration c, continuing to control according to the temperature of the fresh air inlet. And if the concentration G of the solid particles at the fresh air inlet is not less than the set concentration c, controlling a second valve (such as a valve B) to be opened.
Therefore, when the outdoor air quality is poor, i.e. the PM2.5 is greater than 60 or the solid particles are greater than a certain concentration (e.g. the set concentration c), the air quality is considered to be poor and needs to be filtered, at that time, the first valve (e.g. the valve a)21 is closed, the second valve (e.g. the valve B) is opened, and the air passes through the channel with the filter, and fresh air is purified. When the air quality is poor and the air needs to pass through the filter screen (namely the filter screen of the filter 1), the fan (such as the variable speed fan 3) operates with the minimum air volume, and the air volume only can ensure the minimum sanitary standard of a human body to fresh air, and the aim is to reduce the consumption of the filter.
In some embodiments, the fresh air inlet environmental parameter further comprises: fresh air inlet temperature (e.g., fresh air inlet temperature t 1).
The control unit 104, according to the fresh air inlet environmental parameter, controls the switches of the first valve and the second valve, and controls the operation state of the fresh air blower, that is, according to a first other parameter in the fresh air inlet environmental parameter, continues to control the switches of the first valve and the second valve, and continues to control the operation state of the fresh air blower, or according to a second other parameter in the fresh air inlet environmental parameter, continues to control the switches of the first valve and the second valve, and continues to control the operation state of the fresh air blower, further includes: according to new trend entry temperature control new trend system's process, specifically can include:
the control unit 104 is specifically further configured to determine whether an absolute value of a temperature difference between the fresh air inlet temperature and the indoor temperature set value is less than a set temperature (e.g., a set temperature a). An indoor temperature set point, such as indoor temperature set point t 2. The specific functions and processes of the control unit 104 are also referred to in step S410.
The control unit 104 is specifically configured to control the first valve to open if an absolute value of a temperature difference between the fresh air inlet temperature and an indoor temperature set value is smaller than the set temperature, control the second valve to close if the second valve is not closed, and then control the fresh air blower to operate according to a set high wind level. The specific function and processing of the control unit 104 are also referred to in step S420.
The control unit 104 is specifically configured to control the first valve to open if an absolute value of a temperature difference between the fresh air inlet temperature and an indoor temperature set value is not less than the set temperature, control the second valve to close if the second valve is not closed, and then control the fresh air blower to operate according to a set low wind level. The specific functions and processes of the control unit 104 are also referred to in step S430.
Specifically, it is determined whether the absolute value | t1-t2 | of the difference between the fresh air inlet temperature t1 and the indoor temperature set point t2 is less than the set temperature a. If the absolute value | t1-t2 | of the difference between the fresh air inlet temperature t1 and the indoor temperature set point t2 is less than the set temperature a, the variable speed fan 3 of the fresh air system is controlled to operate according to the set high wind speed, and then a first valve (such as a valve A) of the fresh air system is controlled to be opened. If the absolute value | t1-t2 | of the difference between the fresh air inlet temperature t1 and the indoor temperature set point t2 is not less than the set temperature a, the variable speed fan 3 of the fresh air system is controlled to operate according to the set low wind gear, and then a first valve (such as a valve A) of the fresh air system is controlled to be opened.
Therefore, when the quality of air is good, namely PM2.5 is less than 60 or the concentration of solid particles is less than a certain concentration (such as a set concentration c), fresh air can directly enter a room without being filtered, at the moment, the processor can compare the difference between the outdoor air temperature and the indoor temperature, the judgment temperature value of the difference between winter and summer can be set as different parameters, when the difference is less than a set value (such as a set temperature a), the fan is adjusted to operate at a high air flow rate, and when the difference is more than a set value, the damper is adjusted to operate at a low air flow rate. Like this, can reduce the new trend and get into the power consumption of the increase of back air conditioning system, it is little when indoor outer air temperature differs, at this moment the new trend of big amount of wind helps indoor people to have more comfortable more healthy, send into after only the heat transfer with airing exhaust indoor to the new trend that the temperature differs little moreover and do not influence indoor temperature field greatly. When the outdoor air temperature and the indoor air temperature are greatly different, the minimum fresh air requirement of the human body on the fresh air is only required to be conveyed into the room, and therefore energy consumption can be greatly saved.
Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method shown in fig. 1 to 4, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not repeated herein.
Through a large number of tests, the technical scheme of the invention is adopted, and the fresh air quantity and the fresh air treatment process are controlled according to the indoor air state before fresh air treatment by measuring the indoor air state before fresh air treatment, so that the consumption of a filter and the energy consumption of an air conditioner are reduced, and the fresh air regulation effect is improved.
According to the embodiment of the invention, the fresh air system corresponding to the control device of the fresh air system is also provided. This new trend system can include: the control device of the fresh air system.
In some schemes, the indoor and outdoor dust pollution degree and air freshness environmental parameters can be collected through a sensor, and the indoor and outdoor environmental parameters are compared and judged, so that different working modes of an air conditioner and an air purifier are controlled, and the indoor air quality is kept in a better state. But considering only one factor of air quality, such adjustments can result in large temperature variations within the room.
In other schemes, the working states of the air conditioner and the air purifier can be respectively obtained through the intelligent home client under the conditions that the air conditioner and the air purifier are independently or separately installed and independently controlled, and then the working state of the air purifier is adjusted according to the working state of the air conditioner, so that the air quality is adjusted to the maximum extent on the basis of ensuring the temperature control of the air conditioner. However, no human factor is considered for the start-up of the purifier, and only the air quality is considered.
Therefore, the indoor air quality is greatly influenced by the external air quality, and the energy consumption of the air conditioning system is serious due to the addition of the fresh air system.
In some embodiments, the invention provides a fresh air control system with dynamic air volume adjustment, which controls the fresh air volume and the fresh air processing process by measuring the state before fresh air processing. Specifically, the detection of the air quality and the temperature before the fresh air enters the room can be adopted, the fresh air quantity and the way of entering the room by the fresh air can be dynamically adjusted, the consumption of a filter and the energy consumption of an air conditioner are reduced, and the fresh air adjusting effect is improved. Compared with the related scheme, the fresh air control scheme provided by the scheme of the invention can greatly reduce the cost of indoor air conditioning on the premise of keeping the indoor air healthy.
The scheme of the invention relates to the optimization control of a fresh air system, and whether fresh air passes through a filter or not and the air volume of the fresh air is controlled before entering a room.
Wherein, new trend control system, the control system of new trend system promptly. The fresh air system is a set of independent air processing system consisting of an air supply system and an air exhaust system and is divided into a pipeline type fresh air system and a pipeline-free fresh air system. The pipeline type fresh air system consists of a fresh air fan and pipeline accessories, outdoor air is purified by the fresh air fan and is led into a room, and indoor air is discharged through a pipeline; the ductless fresh air system is composed of a fresh air fan, and the fresh air fan is used for purifying outdoor air and guiding the outdoor air into a room.
The following describes an exemplary implementation process of the scheme of the present invention with reference to the examples shown in fig. 6 and fig. 7.
Fig. 6 is a schematic structural diagram of an embodiment of a fresh air control system with dynamic air volume adjustment. As shown in fig. 6, the fresh air control system for dynamic air volume adjustment includes: along the direction from the fresh air inlet to the fresh air outlet, a filter 1, a valve component and a variable speed fan 3 are arranged. A valve assembly, comprising: a first valve (e.g., valve a)21 and a second valve (e.g., valve B) 22. A first valve (e.g., valve a)21 and a second valve (e.g., valve B)22 are located between the filter 1 and the variable speed fan 3 and are arranged one above the other. The filter 1 is disposed behind the second valve (e.g., valve B)22 in the direction from the fresh air inlet to the fresh air outlet. New fan new trend passageway sets up to the binary channels, first passageway and second passageway promptly. A first valve (e.g., valve a)21 is located in the first passage. Filter 1 and a second valve (e.g., valve B)22 are located in the second passage.
Fig. 7 is a schematic diagram of a fresh air control flow of an embodiment of a fresh air control system with dynamic air volume adjustment. As shown in fig. 7, the fresh air control process of the fresh air control system with dynamic air volume adjustment includes:
step 1, judging whether a person exists in a room, if so, starting a fresh air control system, and executing step 2; if no one is in the room, the fresh air control system does not operate.
And 2, controlling whether the fresh air is filtered or not and controlling the air volume in the scheme of the invention, wherein the real-time air quality of the outdoor air is mainly considered. After the fresh air control system is started, detecting indoor CO2Concentration n, and judging indoor CO2Whether the concentration n is greater than the set concentration f. If indoor CO2And if the concentration n is greater than the set concentration f, controlling the fresh air inlet temperature t 1. If indoor CO2If the concentration n is not more than the set concentration f, the fresh air control system does not operate.
And 3, after controlling the temperature t1 of the fresh air inlet, detecting the value P of the PM2.5 of the fresh air inlet, and judging whether the value P of the PM2.5 of the fresh air inlet is smaller than a set value b. And if the value P of the fresh air inlet PM2.5 is smaller than the set value b, executing the step 4. And if the value P of the PM2.5 of the fresh air inlet is not less than the set value B, controlling a second valve (such as a valve B) to be opened.
And 4, detecting the concentration G of the solid particles at the fresh air inlet, and judging whether the concentration G of the solid particles at the fresh air inlet is less than a set concentration c. And (5) if the concentration G of the solid particles at the fresh air inlet is less than the set concentration c, executing the step. And if the concentration G of the solid particles at the fresh air inlet is not less than the set concentration c, controlling a second valve (such as a valve B) to be opened.
It can be seen that when the outdoor air quality is poor, i.e. PM2.5 is greater than 60, or the concentration of solid particles is greater than a certain concentration (e.g. the set concentration c), the air quality is considered to be poor and needs to be filtered, and then the first valve (e.g. valve a)21 is closed, and the second valve (e.g. valve B) is opened, so that the air passes through the filter channel, and then the fresh air is purified. When the air quality is poor and the air needs to pass through the filter screen (namely the filter screen of the filter 1), the fan (such as the variable speed fan 3) operates with the minimum air volume, and the air volume only can ensure the minimum sanitary standard of a human body to fresh air, and the aim is to reduce the consumption of the filter.
And 5, judging whether the absolute value | t1-t2 | of the difference between the fresh air inlet temperature t1 and the indoor temperature set value t2 is less than the set temperature a. And if the absolute value | t1-t2 | of the difference between the fresh air inlet temperature t1 and the indoor temperature set value t2 is less than the set temperature a, controlling the variable speed fan 3 of the fresh air system to operate according to the set high wind speed, and then executing the step 6. And if the absolute value | t1-t2 | of the difference between the fresh air inlet temperature t1 and the indoor temperature set value t2 is not less than the set temperature a, controlling the variable speed fan 3 of the fresh air system to operate according to the set low wind gear, and then executing the step 6.
And 6, controlling a first valve (such as a valve A) of the fresh air system to be opened. In this case, the second valve (e.g., valve B) is closed.
It can be seen that when the air quality is good, i.e. the PM2.5 is less than 60 or the solid particulate matter concentration is less than a certain concentration (e.g. the set concentration c), the fresh air can directly enter the room without being filtered, at this time, the processor can compare the difference between the outdoor air temperature and the indoor temperature, the judgment temperature value of the difference between winter and summer can be set as different parameters, when the difference is less than the set value (e.g. the set temperature a), the fan is switched to operate at a high air flow, and when the difference is greater than the set value, the fan is switched to operate at a low air flow. The purpose of control is in order to reduce the increased power consumption of the air conditioning system after the fresh air enters, when the temperature difference of the indoor air and the outdoor air is not large, the fresh air with large air volume is more comfortable and healthier for indoor people, and the fresh air with the small temperature difference only exchanges heat with the exhaust air and then is sent into the room to have little influence on the indoor temperature field. When the outdoor air temperature and the indoor air temperature are greatly different, the minimum fresh air requirement of the human body on the fresh air is only required to be conveyed into the room, and therefore energy consumption can be greatly saved.
In the scheme of the invention, the detection of the fresh air is real-time, when the air conditioner runs, under the working condition of summer, the indoor and outdoor temperature difference is small at night and in the morning, the fresh air volume is larger, and under the condition that the outside air temperature is very high at noon, afternoon and the like, the fresh air runs with the minimum fresh air volume so as to save energy. Not only can the air volume vary during the day, but also there can be different patterns as the day is different. The same is true for the air quality index.
The scheme of the invention aims at saving energy, operates at the lowest air flow when the outside air is polluted or the temperature difference between the inside and the outside is large, and operates at the high air flow under the conditions of good outside air and small temperature difference between the inside and the outside; the air can be filtered when the air is polluted, and the air is not filtered when the air is fresh, so that the consumption of a filter screen is reduced; and a fresh air channel of the fresh air fan is set into double channels, so that the control is more flexible.
Since the processing and functions of the fresh air system of this embodiment are basically corresponding to the embodiment, principle and example of the device shown in fig. 5, the description of this embodiment is not given in detail, and reference may be made to the related description in the foregoing embodiment, which is not described herein again.
Through a large number of tests, the technical scheme of the invention can reduce energy consumption, improve indoor air quality, realize automatic control and have good control flexibility by dynamically adjusting the amount of fresh air entering the room by the fresh air system and the way of fresh air entering the room.
According to an embodiment of the present invention, a storage medium corresponding to a control method of a fresh air system is further provided, where the storage medium includes a stored program, and when the program runs, a device in which the storage medium is located is controlled to execute the control method of the fresh air system.
Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 4, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.
Through a large number of tests, the technical scheme of the invention can dynamically adjust the fresh air volume and the way of the fresh air entering the room by detecting the air quality and temperature before the fresh air enters the room, and can greatly reduce the cost of indoor air conditioning on the premise of keeping the indoor air healthy.
According to an embodiment of the present invention, there is also provided a processor corresponding to a control method of a fresh air system, where the processor is configured to run a program, and the program executes the control method of the fresh air system when running.
Since the processing and functions implemented by the processor of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 4, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.
Through a large number of tests, the technical scheme of the invention is adopted, and whether the fresh air passes through the filter before entering the room or not and the air volume of the fresh air are controlled, so that the consumption of the filter and the energy consumption of the air conditioner are reduced, and the fresh air adjusting effect is improved.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (13)

1. A control method of a fresh air system is characterized in that a fresh air channel of a fresh air fan in the fresh air system comprises a first channel and a second channel; a first valve is arranged in the first channel, and a filtering unit and a second valve are arranged in the second channel; the control method of the fresh air system comprises the following steps:
under the condition that a user is in a room, acquiring indoor air quality parameters and acquiring fresh air inlet environmental parameters of the fresh air fan;
and controlling the opening and closing of the first valve and the second valve and controlling the running state of the fresh air machine according to the indoor air quality parameter and the fresh air inlet environment parameter.
2. The method for controlling the fresh air system according to claim 1, wherein the indoor air quality parameter comprises: indoor CO2Concentration;
according to indoor air quality parameter with new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state includes:
CO in the room2And under the condition that the concentration is greater than a first set concentration, controlling the opening and closing of the first valve and the second valve according to the fresh air inlet environmental parameter, and controlling the running state of the fresh air fan.
3. The method for controlling the fresh air system according to claim 2, wherein the fresh air inlet environmental parameters include: a fresh air inlet PM 2.5;
according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state includes:
determining whether the PM2.5 of the fresh air inlet is smaller than a set value;
if the PM2.5 of the fresh air inlet is smaller than the set value, continuously controlling the opening and closing of the first valve according to first other parameters in the environment parameters of the fresh air inlet, controlling the second valve to be continuously closed, and continuously controlling the running state of the fresh air fan;
and if the PM2.5 of the fresh air inlet is not less than the set value, controlling the first valve to be closed, controlling the second valve to be opened, and controlling the fresh air fan to operate according to the set minimum air volume.
4. The method for controlling the fresh air system according to claim 2 or 3, wherein the fresh air inlet environmental parameter further comprises: fresh air inlet solid particulate matter concentration;
according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state still includes:
determining whether the concentration of the solid particles at the fresh air inlet is less than a set concentration;
if the concentration of the solid particles at the fresh air inlet is less than the set concentration, continuously controlling the opening and closing of the first valve and the second valve according to second other parameters in the environment parameters of the fresh air inlet, and continuously controlling the running state of the fresh air fan;
and if the concentration of the solid particles at the fresh air inlet is not less than the set concentration, controlling the first valve to be closed, controlling the second valve to be opened, and controlling the fresh air fan to operate according to the set minimum air volume.
5. The method for controlling the fresh air system according to claim 4, wherein the fresh air inlet environmental parameter further comprises: fresh air inlet temperature;
according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state still includes:
determining whether the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is less than the set temperature;
if the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is smaller than the set temperature, controlling the first valve to be opened, controlling the second valve to be closed under the condition that the second valve is not closed, and then controlling the fresh air machine to operate according to the set high wind gear;
and if the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is not less than the set temperature, controlling the first valve to be opened, controlling the second valve to be closed under the condition that the second valve is not closed, and then controlling the fresh air machine to operate according to the set low wind gear.
6. A control device of a fresh air system is characterized in that a fresh air channel of a fresh air fan in the fresh air system comprises a first channel and a second channel; a first valve is arranged in the first channel, and a filtering unit and a second valve are arranged in the second channel; the controlling means of new trend system includes:
the acquiring unit is configured to acquire indoor air quality parameters and acquire fresh air inlet environmental parameters of the fresh air fan under the condition that a user is indoors;
and the control unit is configured to control the switches of the first valve and the second valve and control the running state of the fresh air fan according to the indoor air quality parameter and the fresh air inlet environment parameter.
7. The control device of the fresh air system as claimed in claim 6, wherein the indoor air quality parameter comprises: indoor CO2Concentration;
the control unit, according to indoor air quality parameter with new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state includes:
CO in the room2And under the condition that the concentration is greater than a first set concentration, controlling the opening and closing of the first valve and the second valve according to the fresh air inlet environmental parameter, and controlling the running state of the fresh air fan.
8. The control device of the fresh air system as claimed in claim 7, wherein the fresh air inlet environmental parameters include: a fresh air inlet PM 2.5;
the control unit, according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state includes:
determining whether the PM2.5 of the fresh air inlet is smaller than a set value;
if the PM2.5 of the fresh air inlet is smaller than the set value, continuously controlling the opening and closing of the first valve according to first other parameters in the environment parameters of the fresh air inlet, controlling the second valve to be continuously closed, and continuously controlling the running state of the fresh air fan;
and if the PM2.5 of the fresh air inlet is not less than the set value, controlling the first valve to be closed, controlling the second valve to be opened, and controlling the fresh air fan to operate according to the set minimum air volume.
9. The control device of the fresh air system as claimed in claim 7 or 8, wherein the fresh air inlet environmental parameter further comprises: fresh air inlet solid particulate matter concentration;
the control unit, according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state still includes:
determining whether the concentration of the solid particles at the fresh air inlet is less than a set concentration;
if the concentration of the solid particles at the fresh air inlet is less than the set concentration, continuously controlling the opening and closing of the first valve and the second valve according to second other parameters in the environment parameters of the fresh air inlet, and continuously controlling the running state of the fresh air fan;
and if the concentration of the solid particles at the fresh air inlet is not less than the set concentration, controlling the first valve to be closed, controlling the second valve to be opened, and controlling the fresh air fan to operate according to the set minimum air volume.
10. The control device of the fresh air system as claimed in claim 9, wherein the fresh air inlet environmental parameter further comprises: fresh air inlet temperature;
the control unit, according to new trend entry environmental parameter, control the switch of first valve with the second valve to control new trend fan's running state still includes:
determining whether the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is less than the set temperature;
if the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is smaller than the set temperature, controlling the first valve to be opened, controlling the second valve to be closed under the condition that the second valve is not closed, and then controlling the fresh air machine to operate according to the set high wind gear;
and if the absolute value of the temperature difference between the fresh air inlet temperature and the indoor temperature set value is not less than the set temperature, controlling the first valve to be opened, controlling the second valve to be closed under the condition that the second valve is not closed, and then controlling the fresh air machine to operate according to the set low wind gear.
11. A fresh air system, comprising: control device of a fresh air system as claimed in any of the claims 6 to 10.
12. A storage medium, characterized in that the storage medium comprises a stored program, wherein when the program runs, the device where the storage medium is located is controlled to execute the control method of the fresh air system according to any one of claims 1 to 5.
13. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the control method of the ventilation system according to any one of claims 1 to 5 when running.
CN202011301414.XA 2020-11-19 2020-11-19 Fresh air system, control method and device thereof, storage medium and processor Pending CN112460769A (en)

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