A fresh air control method, device, system and storage medium

Abstract

The application discloses a fresh air control method, device, system and storage medium, the method comprises: when the fresh air system is opened, the first odor sensor placed in the air pipe is used to obtain the odor concentration; when the odor concentration obtained by the first odor sensor is greater than the first preset value, the first electric air volume regulating valve and the second electric air volume regulating valve are controlled to be closed, wherein the first electric air volume regulating valve is located in the first pipeline provided with activated carbon, and the second electric air volume regulating valve is located in the second pipeline without activated carbon; when the odor concentration obtained by the first odor sensor is less than the first preset value and greater than the second preset value, the first electric air volume regulating valve is controlled to be opened, and the second electric air volume regulating valve is controlled to be closed, wherein the fresh air passes through the first odor sensor and then passes through the first electric air volume regulating valve and / or the second electric air volume regulating valve. According to the scheme, the air volume of the fresh air system is controlled according to the odor in the air, and then the indoor air quality is improved.

Description

Technical Field

[0001] This application relates to the field of fresh air control technology, and in particular to a fresh air control method, device, system and storage medium. Background Technology

[0002] As people's living standards improve, more and more users are choosing fresh air systems to ventilate their homes and ensure fresh indoor air. Current fresh air systems often adjust airflow based on air temperature, humidity, and carbon dioxide concentration. However, if there are unpleasant odors in the outdoor air, continuous ventilation will reduce indoor air quality.

[0003] Therefore, how to provide a fresh air control method that controls the airflow of the fresh air system based on odors in the air in order to improve indoor air quality has become an urgent technical problem to be solved. Summary of the Invention

[0004] This application provides a fresh air control method, device, system, and storage medium for controlling the airflow of a fresh air system based on odors in the air, thereby improving indoor air quality.

[0005] This application provides a fresh air control method, including:

[0006] When the fresh air system is turned on, the odor concentration is obtained by the first odor sensor placed in the air duct.

[0007] When the odor concentration obtained by the first odor sensor is greater than the first preset value, the first electric air volume regulating valve and the second electric air volume regulating valve are controlled to close. The first electric air volume regulating valve is located in the first pipeline with activated carbon, and the second electric air volume regulating valve is located in the second pipeline without activated carbon.

[0008] When the odor concentration detected by the first odor sensor is less than the first preset value and greater than the second preset value, the first electric air volume regulating valve is opened and the second electric air volume regulating valve is closed. The fresh air entering the fresh air system passes through the first odor sensor and then through the first pipe and / or the second pipe.

[0009] The beneficial effects of this application are as follows: The fresh air system has two ducts. Activated carbon is installed in the first duct, but not in the second duct. When the fresh air system is turned on, the odor concentration is obtained by a first odor sensor placed in the duct. When the odor concentration obtained by the first odor sensor is greater than a first preset value, the first and second electric air volume regulating valves are closed, preventing odors from entering the room and avoiding a decrease in indoor air quality. When the odor concentration obtained by the first odor sensor is less than the first preset value but greater than the second preset value, the first electric air volume regulating valve is opened, and the second electric air volume regulating valve is closed. In this case, the fresh air entering the fresh air system passes through the first odor sensor and then through the first and / or second ducts. At this time, the odors in the air are filtered by the first duct, which contains activated carbon, thus achieving ventilation while preventing odors from entering the room and improving air quality.

[0010] In one embodiment, the method further includes:

[0011] Odor concentration is obtained by a second odor sensor installed in the first pipeline, wherein the fresh air entering the fresh air system passes through activated carbon and then passes through the second odor sensor.

[0012] When the odor concentration detected by the second odor sensor is still greater than the second preset value, the first electric air volume regulating valve is closed.

[0013] In one embodiment, the method further includes:

[0014] When the odor concentration detected by the first odor sensor is less than the second preset value, the first electric air volume regulating valve is closed, and the second electric air volume regulating valve is opened.

[0015] In one embodiment, the method further includes:

[0016] When the odor concentration of the fresh air entering the room is less than the second preset value, the indoor and outdoor air pressure difference is obtained;

[0017] Determine whether the pressure difference between the indoor and outdoor air in the room is within the preset pressure difference range;

[0018] When the pressure difference between the room and the outside exceeds the preset pressure difference range, adjust the opening of the room's air volume regulating valve so that the pressure difference between the room and the outside falls within the preset pressure difference range.

[0019] In one embodiment, the method further includes:

[0020] When the fresh air system is in home mode, it obtains the concentration of odors entering the room and the air pressure difference between the indoor and outdoor areas.

[0021] When the concentration of odor entering the room is less than the second preset value and the pressure difference between the indoor and outdoor air is within the preset pressure difference range, the carbon dioxide regulation mode is activated.

[0022] In one embodiment, the carbon dioxide regulation mode includes:

[0023] Obtain the carbon dioxide concentration in each room;

[0024] When there is a first target room with a carbon dioxide concentration lower than the third preset value, the opening of the electric valve on each branch pipe of the corresponding air distribution box of the first target room is closed.

[0025] When there is a second target room with a carbon dioxide concentration greater than the fourth preset value, increase the opening of the air valve on the branch pipe of the corresponding air distribution box of the second target room so that the carbon dioxide concentration in the second target room is lower than the fourth preset value.

[0026] In one embodiment, when the carbon dioxide concentration is below a fourth preset value, a humidity adjustment mode is entered; wherein the humidity adjustment mode includes:

[0027] Obtain the air humidity in each room;

[0028] When there is a third target room with an air humidity value greater than the first humidity value, the opening degree of the air valve on the branch pipe of the corresponding air distribution box of the third target room is increased.

[0029] When there is a fourth target room with an air humidity value lower than the second humidity value, the opening degree of the air valve on the branch pipe of the corresponding air distribution box of the fourth target room is reduced.

[0030] This application also provides a fresh air control device, including:

[0031] The first acquisition module is used to acquire the odor concentration through a first odor sensor placed in the air duct when the fresh air system is turned on.

[0032] The first control module is used to control the first electric air volume regulating valve and the second electric air volume regulating valve to close when the odor concentration obtained by the first odor sensor is greater than the first preset value. The first electric air volume regulating valve is located in the first pipeline with activated carbon, and the second electric air volume regulating valve is located in the second pipeline without activated carbon.

[0033] The second control module is used to control the first electric air volume regulating valve to open and the second electric air volume regulating valve to close when the odor concentration obtained by the first odor sensor is less than the first preset value and greater than the second preset value. The fresh air entering the fresh air system passes through the first odor sensor and then through the first pipeline and / or the second pipeline.

[0034] In one embodiment, the apparatus further includes:

[0035] The second acquisition module is used to acquire the odor concentration by a second odor sensor installed in the first pipeline, wherein the fresh air entering the fresh air system passes through activated carbon and then passes through the second odor sensor.

[0036] The third control module is used to control the first electric air volume regulating valve to close when the odor concentration obtained by the second odor sensor is still greater than the second preset value.

[0037] In one embodiment, the apparatus further includes:

[0038] The fourth control module is used to control the first electric air volume regulating valve to close and the second electric air volume regulating valve to open when the odor concentration obtained by the first odor sensor is less than the second preset value.

[0039] In one embodiment, the apparatus further includes:

[0040] The third acquisition module is used to acquire the indoor and outdoor air pressure difference when the odor concentration of the fresh air entering the room is less than the second preset value.

[0041] The judgment module is used to determine whether the pressure difference between the indoor and outdoor air in the room is within the preset pressure difference range;

[0042] The adjustment module is used to adjust the opening of the room's air volume regulating valve when the pressure difference between the room's interior and exterior exceeds a preset pressure difference range, so that the pressure difference between the room's interior and exterior falls within the preset pressure difference range.

[0043] In one embodiment, the apparatus further includes:

[0044] The fourth acquisition module is used to acquire the concentration of odors entering the room and the air pressure difference between the indoor and outdoor areas when the fresh air system is in home mode.

[0045] The mode adjustment module is used to enter the carbon dioxide adjustment mode when the concentration of odor entering the room is less than the second preset value and the pressure difference between the indoor and outdoor air is within the preset pressure difference range.

[0046] In one embodiment, the carbon dioxide regulation mode includes:

[0047] Obtain the carbon dioxide concentration in each room;

[0048] When there is a first target room with a carbon dioxide concentration lower than the third preset value, the opening of the electric valve on each branch pipe of the corresponding air distribution box of the first target room is closed.

[0049] When there is a second target room with a carbon dioxide concentration greater than the fourth preset value, increase the opening of the air valve on the branch pipe of the corresponding air distribution box of the second target room so that the carbon dioxide concentration in the second target room is lower than the fourth preset value.

[0050] In one embodiment, the mode adjustment module is further configured to enter a humidity adjustment mode when the carbon dioxide concentration is below a fourth preset value; wherein the humidity adjustment mode includes:

[0051] Obtain the air humidity in each room;

[0052] When there is a third target room with an air humidity value greater than the first humidity value, the opening degree of the air valve on the branch pipe of the corresponding air distribution box of the third target room is increased.

[0053] When there is a fourth target room with an air humidity value lower than the second humidity value, the opening degree of the air valve on the branch pipe of the corresponding air distribution box of the fourth target room is reduced.

[0054] A fresh air control system includes:

[0055] At least one processor; and,

[0056] A memory communicatively connected to the at least one processor; wherein,

[0057] The memory stores instructions that can be executed by the at least one processor to implement the fresh air control method described in any of the above embodiments.

[0058] A computer-readable storage medium, when the instructions in the storage medium are executed by a processor corresponding to the fresh air control system, enables the fresh air control system to implement the fresh air control method described in any of the above embodiments.

[0059] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0060] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0061] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the embodiments of the present application to explain the application and do not constitute a limitation thereof. In the drawings:

[0062] Figure 1This is a flowchart of a fresh air control method in one embodiment of this application;

[0063] Figure 2 This is a schematic diagram of the structure of a fresh air device according to one embodiment of this application;

[0064] Figure 3 This is a schematic diagram of the hardware structure of a fresh air control system according to one embodiment of this application;

[0065] Figure 4 This is a schematic diagram of the hardware structure of a fresh air control system according to one embodiment of this application. Detailed Implementation

[0066] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0067] Figure 1 This is a flowchart of a fresh air control method in one embodiment of this application, such as... Figure 1 As shown, the method can be implemented as follows: S101-S103:

[0068] In step S101, when the fresh air system is turned on, the odor concentration is obtained by the first odor sensor placed in the air duct;

[0069] In step S102, when the odor concentration obtained by the first odor sensor is greater than the first preset value, the first electric air volume regulating valve and the second electric air volume regulating valve are controlled to close. The first electric air volume regulating valve is located in the first pipeline with activated carbon, and the second electric air volume regulating valve is located in the second pipeline without activated carbon.

[0070] In step S103, when the odor concentration obtained by the first odor sensor is less than the first preset value and greater than the second preset value, the first electric air volume regulating valve is opened and the second electric air volume regulating valve is closed. The fresh air entering the fresh air system passes through the first odor sensor and then through the first pipeline and / or the second pipeline.

[0071] To ensure the quality of fresh air entering the room, the odor concentration is obtained by a first odor sensor placed in the air duct when the fresh air system is turned on.

[0072] When the odor concentration detected by the first odor sensor exceeds a first preset value, the first and second electric airflow regulating valves are closed. The first electric airflow regulating valve is located in a first pipeline equipped with activated carbon, and the second electric airflow regulating valve is located in a second pipeline without activated carbon. The first preset value can be a fixed value, for example, an odor concentration greater than 0.6 mg / m³. 3It should be noted that the first preset value can also be set to a value that is positively correlated with the maximum filtration capacity of the activated carbon in the first pipeline. For example, since the first preset value is related to the usage of activated carbon, it can be determined by the following formula:

[0073] K=αM(t0-t)K0

[0074] Where K is the first preset value; α is the adjustment coefficient; M is the mass of activated carbon; t0 is the expected lifespan of the activated carbon; t is the usage time of the activated carbon; and K0 is the adsorption efficiency of the activated carbon per unit mass for odors. Alternatively, since the adsorption efficiency of activated carbon is related to the current ventilation volume, the first preset value can also be determined using the following formula:

[0075]

[0076] Where K is the first preset value; β is the adjustment coefficient; M is the mass of activated carbon; t0 is the preset expected lifespan of activated carbon; t is the usage time of activated carbon; K0 is the adsorption efficiency of odor per unit mass of activated carbon; ρ is the air density; and v is the current air velocity.

[0077] When the odor concentration detected by the first odor sensor is greater than the first preset value, it indicates that the odor in the outdoor air exceeds the maximum filtration capacity of the activated carbon. Therefore, in order to prevent the odor from entering the room, the first electric air volume regulating valve and the second electric air volume regulating valve in the first and second pipelines are both closed.

[0078] When the odor concentration detected by the first odor sensor is less than a first preset value but greater than a second preset value, the first electric airflow regulating valve is opened, and the second electric airflow regulating valve is closed. The fresh air entering the fresh air system passes through the first odor sensor and then through the first and / or second duct. The second preset value is the highest odor concentration that ensures the odor is imperceptible to humans, for example, an odor concentration of less than 0.1 mg / m³. 3 Since the outdoor air odor concentration is less than the first preset value but greater than the second preset value, the odor concentration is within the processing capacity of activated carbon. The odor in the air can be removed by the filtration of activated carbon. Therefore, the odor removal mode is activated, the first electric air volume regulating valve is turned on to remove the odor through activated carbon, and the second electric air volume regulating valve is turned off to prevent outdoor air from entering the room directly through the second pipe.

[0079] When the odor concentration detected by the first odor sensor is less than the second preset value, since the human body cannot perceive the odor, no odor treatment is required, and ventilation in fresh air mode is activated. At this time, the first electric air volume regulating valve is closed, and the second electric air volume regulating valve is opened, thus avoiding waste of activated carbon.

[0080] Furthermore, to determine the quality of the incoming indoor air, a secondary odor test is performed on the treated fresh air. Specifically, a second odor sensor installed in the first ductwork acquires the odor concentration. The fresh air entering the fresh air system passes through activated carbon before passing through the second odor sensor. When the odor concentration acquired by the second odor sensor is less than a second preset value, it indicates that the quality of the incoming indoor air meets the requirements, and no airflow control is applied. When the odor concentration acquired by the second odor sensor is still greater than the second preset value, the airflow through the first ductwork can be adjusted by regulating the first electric airflow regulating valve. Alternatively, the first electric airflow regulating valve can be closed to prevent odors from entering the room.

[0081] In this application, the air valves on the branch lines of each household's air distribution box can be used to adjust the air energy of each branch line according to the indoor positive pressure, humidity, and carbon dioxide concentration, thereby meeting the room's fresh air requirements.

[0082] Slight positive pressure refers to an indoor pressure that is slightly higher than the outdoor atmospheric pressure. Since gas flows from high pressure to low pressure, slight positive pressure can prevent outdoor air from seeping into the room through door and window gaps. Therefore, in one embodiment of this application, the indoor-outdoor air pressure difference is obtained when the odor concentration of the incoming fresh air is less than a second preset value. Specifically, when the odor concentration obtained by the first odor sensor is less than the second preset value or the odor concentration obtained by the second odor sensor is less than the second preset value, it is determined that the odor concentration of the incoming fresh air is less than the second preset value. The indoor-outdoor air pressure difference is then obtained using the following formula:

[0083]

[0084] Where ΔP is the indoor-outdoor wind pressure difference, ρ is the air density, and v 内 For indoor wind speed, v 外 This refers to the outdoor wind speed.

[0085] Then, determine whether the indoor and outdoor air pressure difference is within a preset pressure difference range, for example, the preset indoor and outdoor air pressure difference is between 5Pa and 10Pa. When the indoor and outdoor air pressure difference exceeds the preset pressure difference range, adjust the opening of the room's air volume regulating valve so that the indoor and outdoor air pressure difference falls into the preset pressure difference range. That is, when the indoor and outdoor air pressure difference does not meet the requirement of slight positive pressure < 5Pa, increase the opening of the room's air volume regulating valve to maintain the indoor and outdoor air pressure difference between 5Pa and 10Pa. When the indoor and outdoor air pressure difference is > 10Pa, reduce the opening of the corresponding air valve on the branch pipe of the corresponding air distribution box of the room so that the measured indoor and outdoor air pressure difference in the room is between 5Pa and 10Pa.

[0086] Because the human body requires fresh air not only to be odorless and have a slight positive pressure, but also to have suitable carbon dioxide content, temperature, and humidity. Therefore, in another embodiment of this application, when the fresh air system is in home mode, the concentration of odor entering the room and the pressure difference between the room and the outside are obtained; when the concentration of odor entering the room is less than a second preset value and the pressure difference between the room and the outside is within a preset pressure difference range, the system enters carbon dioxide regulation mode. Specifically, after entering carbon dioxide regulation mode: the carbon dioxide concentration of each room is obtained; when there is a first target room with a carbon dioxide concentration lower than a third preset value, the opening of the electric valve on each branch pipe of the corresponding air distribution box of the first target room is closed. For example, when the indoor air carbon dioxide concentration is lower than 500 PPM, it indicates that the indoor air is fresh, and the opening of the electric valve on each branch pipe of the corresponding air distribution box is directly closed. When a second target room has a carbon dioxide concentration greater than the fourth preset value, the opening of the valve on the corresponding branch pipe of the air distribution box for the second target room is increased to lower the carbon dioxide concentration in the second target room below the fourth preset value. That is, when the indoor air carbon dioxide concentration is greater than 1000 PPM, the opening of the corresponding valve on the branch pipe of the air distribution box for that room is increased to keep the carbon dioxide concentration in the measured room between 500 PPM and 1000 PPM. When a room has a carbon dioxide concentration higher than but lower than the third preset value, for example, when the indoor air carbon dioxide concentration is between 500 PPM and 1000 PPM, the carbon dioxide concentration is within the preset normal range, and no valve adjustment is required.

[0087] In another embodiment of this application, when the carbon dioxide concentration is lower than a fourth preset value, a humidity adjustment mode is entered. Specifically, after entering the humidity adjustment mode: the air humidity of each room is acquired; when there is a third target room with an air humidity value greater than a first humidity value, the opening of the valve on the corresponding air distribution box branch pipe of the third target room is increased; when there is a fourth target room with an air humidity value less than a second humidity value, the opening of the valve on the corresponding air distribution box branch pipe of the fourth target room is decreased. For example, the upper limit of indoor humidity is set to ag / kg, and the lower limit of indoor humidity is set to bg / kg. When the air humidity value of a room is greater than a, the opening of the corresponding valve on the air distribution box branch pipe of that room is increased; when the air humidity value of a room is less than b, the opening of the corresponding valve on the air distribution box branch pipe of that room is decreased.

[0088] The beneficial effects of this application are as follows: The fresh air system has two ducts. Activated carbon is installed in the first duct, but not in the second duct. When the fresh air system is turned on, the odor concentration is obtained by a first odor sensor placed in the duct. When the odor concentration obtained by the first odor sensor is greater than a first preset value, the first and second electric air volume regulating valves are closed, preventing odors from entering the room and avoiding a decrease in indoor air quality. When the odor concentration obtained by the first odor sensor is less than the first preset value but greater than the second preset value, the first electric air volume regulating valve is opened, and the second electric air volume regulating valve is closed. In this case, the fresh air entering the fresh air system passes through the first odor sensor and then through the first and / or second ducts. At this time, the odors in the air are filtered by the first duct, which contains activated carbon, thus achieving ventilation while preventing odors from entering the room and improving air quality.

[0089] In one embodiment, the method may also be implemented as follows: steps A1-A2:

[0090] In step A1, the odor concentration is obtained by a second odor sensor installed in the first pipeline, wherein the fresh air entering the fresh air system passes through activated carbon and then through the second odor sensor;

[0091] In step A2, when the odor concentration obtained by the second odor sensor is still greater than the second preset value, the first electric air volume regulating valve is controlled to close.

[0092] In one embodiment, the method may also be implemented as follows:

[0093] When the odor concentration detected by the first odor sensor is less than the second preset value, the first electric air volume regulating valve is closed, and the second electric air volume regulating valve is opened.

[0094] In one embodiment, the method may also be implemented as steps B1-B3:

[0095] In step B1, when the odor concentration of the fresh air entering the room is less than the second preset value, the indoor and outdoor air pressure difference is obtained;

[0096] In step B2, it is determined whether the pressure difference between the indoor and outdoor air in the room is within the preset pressure difference range;

[0097] In step B3, when the pressure difference between the room and the outside exceeds the preset pressure difference range, the opening of the room's air volume regulating valve is adjusted so that the pressure difference between the room and the outside falls into the preset pressure difference range.

[0098] In one embodiment, the method may also be implemented as steps C1-C3:

[0099] In step C1, when the fresh air system is in home mode, the concentration of odors entering the room and the pressure difference between the indoor and outdoor air are obtained;

[0100] In step C2, when the concentration of odor entering the room is less than the second preset value and the pressure difference between the indoor and outdoor air is within the preset pressure difference range, the carbon dioxide regulation mode is entered.

[0101] In one embodiment, the carbon dioxide regulation mode described in step C2 above can be implemented as follows: steps D1-D3:

[0102] In step D1, the carbon dioxide concentration in each room is obtained;

[0103] In step D2, when there is a first target room with a carbon dioxide concentration lower than the third preset value, the opening of the electric valve on each branch pipe of the corresponding air distribution box of the first target room is closed.

[0104] In step D3, when there is a second target room with a carbon dioxide concentration greater than the fourth preset value, the opening of the air valve on the branch pipe of the corresponding air distribution box of the second target room is increased so that the carbon dioxide concentration in the second target room is lower than the fourth preset value.

[0105] In one embodiment, the carbon dioxide adjustment mode further includes switching to a humidity adjustment mode when the carbon dioxide concentration is below a fourth preset value; wherein the humidity adjustment mode can be implemented as in steps E1-E3:

[0106] In step E1, the air humidity of each room is obtained;

[0107] In step E2, when there is a third target room with an air humidity value greater than the first humidity value, the opening degree of the air valve on the branch pipe of the corresponding air distribution box of the third target room is increased.

[0108] In step E3, when there is a fourth target room with an air humidity value lower than the second humidity value, the opening degree of the air valve on the branch pipe of the corresponding air distribution box of the fourth target room is reduced.

[0109] Figure 2 This is a schematic diagram of the structure of a fresh air device according to one embodiment of this application, as shown below. Figure 2 As shown in a specific embodiment of this application, the fresh air device includes a fresh air duct, an air distribution box, an indoor control component, an odor control component, and an intelligent control component. Among them,

[0110] Fresh air duct system: Includes a main duct and two branch ducts. The main duct is directly connected to the outside. The two branch ducts, including a first duct and a second duct, connect the main duct to the indoor environment. Odor control components are installed within the fresh air duct system. Odor control components: Include a first odor sensor, a second odor sensor, a first electrically operated airflow regulating valve, a second electrically operated airflow regulating valve, and activated carbon. The first odor sensor is located on the main duct for unified monitoring of outdoor air entering the fresh air system, saving costs. The activated carbon is located in the first duct for filtering other air passing through. The second odor sensor is located after the activated carbon in the first duct for monitoring the odor concentration of the filtered air entering the indoor environment. The first and second electrically operated airflow regulating valves are respectively located in the first and second ducts for adjusting the ventilation volume of their respective ducts.

[0111] The distribution box contains a blade control assembly that controls the airflow in each branch of the room via dampers. The blade control assembly includes a blade controller, a fixed sleeve, a valve stem, a wind speed sensor, and an arc-shaped blade baffle system.

[0112] Indoor control components: including temperature sensor, humidity sensor, carbon dioxide sensor, and micro-positive pressure sensor;

[0113] Intelligent control component: Used to receive input control signals, process the collected data, and output control signals to other components.

[0114] The control logic of the fresh air system under various modes is described below:

[0115] 1. Away from home mode

[0116] When users are away from home or away for extended periods, the requirements for carbon dioxide concentration and indoor temperature and humidity are lower, but basic requirements for odorlessness and a slight positive pressure must be met. Therefore, the control logic is as follows: When in "away mode":

[0117] (1) The fresh air volume of each room's branch pipe is controlled by the regulating valve, which directly closes the opening of the electric valve on each branch pipe of the distribution box. The valve opening is closed to the first preset opening, such as 50%.

[0118] When the duct receives airflow with an odor, the first odor sensor first determines the odor concentration. When the first odor sensor detects that the odor concentration in the fresh air is lower than a second preset value (e.g., odor concentration less than 0.1 mg / m³), the odor is considered neutral. 3 When there is no odor in the air or the odor has no effect on the human body, the first electric air volume regulating valve is closed and the second electric air volume regulating valve is opened to ventilate in the fresh air mode.

[0119] When the duct receives airflow with an odor (e.g., odor concentration greater than 0.1 mg / m³), 3 The first odor sensor first assesses the odor concentration. If the odor concentration exceeds the adsorption capacity of the activated carbon in the duct (e.g., odor concentration greater than 0.6 mg / m³), the sensor will detect the odor. 3 The first and second electric airflow regulating valves on the duct are directly closed. If the odor concentration detected by the first odor sensor is greater than 0.1 mg / m³... 3 But less than 0.6 mg / m 3 This indicates that activated carbon can absorb odors; therefore, the odor removal mode should be activated.

[0120] a) The first electric air volume regulating valve is opened, and the second electric air volume regulating valve is closed.

[0121] b) Odor-removing activated carbon is used to treat the fresh air for odor removal. Then, a second odor test is performed on the treated fresh air, using a second odor sensor to detect the odor concentration (e.g., odor concentration less than 0.1 mg / m³). 3 The first electric air volume regulating valve opens, providing continuous ventilation.

[0122] c) If the odor concentration detected by the second odor sensor is still very high (odor concentration greater than 0.1 mg / m³), 3 The first and second electric airflow regulating valves close. This continues until the concentration detected by the first odor sensor (odor concentration less than 0.1 mg / m³) is reached. 3 To meet the requirements, open the air volume regulating valve 1 and simultaneously close the second electric air volume regulating valve.

[0123] (2) When the odor concentration of the fresh air entering the room is lower than the second preset value, monitor the pressure difference between the inside and outside of each room. When the pressure difference between the inside and outside of a room does not meet the requirement of a slight positive pressure ≥ 5 Pa, adjust the opening of the air volume regulating valve of that room to maintain the pressure difference between the inside and outside of the room between 5 Pa and 10 Pa. When the pressure difference between the inside and outside of the room is greater than 10 Pa, reduce the opening of the corresponding air valve on the branch pipe of the corresponding air distribution box of that room to make the pressure difference between the inside and outside of the room measured between 5 Pa and 10 Pa.

[0124] 2. Home mode during air-conditioning season

[0125] During the air-conditioning season, the home mode is controlled using the following logic:

[0126] (1) The fresh air volume of each room's branch pipe is directly opened by regulating the valve to open the electric valve on each branch pipe of the air distribution box to the second preset opening degree, such as 100%.

[0127] (2) When the duct receives airflow with an odor, the first odor sensor first determines the odor concentration. When the first odor sensor detects that the fresh air has no odor or the odor has no effect on the human body (odor concentration less than 0.1 mg / m³), the odor is considered neutral. 3 The first electric air volume regulating valve closes and the second electric air volume regulating valve opens to activate the fresh air mode ventilation.

[0128] (3) When the duct receives airflow with an odor (odor concentration greater than 0.1 mg / m³) 3 The first odor sensor first assesses the odor concentration. If the odor concentration exceeds the adsorption capacity of the activated carbon in the duct (odor concentration greater than 0.6 mg / m³), the sensor will detect the odor. 3 The first and second electric airflow regulating valves on the duct are directly closed. If the odor concentration detected by the first odor sensor is greater than 0.6 mg / m³... 3 Activated charcoal can absorb odors, thus enabling odor removal mode:

[0129] a) The first electric air volume regulating valve is opened, and the second electric air volume regulating valve is closed.

[0130] b) Odor-removing activated carbon is used to treat the odor in the fresh air, and then the treated fresh air undergoes a second odor test. A second odor sensor detects the odor concentration (odor concentration less than 0.1 mg / m³). 3 The first electric air volume regulating valve opens, providing continuous ventilation.

[0131] c) If the odor concentration detected by the second odor sensor is still very high (odor concentration greater than 0.1 mg / m³), 3 The first and second electric airflow regulating valves close. This continues until the concentration detected by the first odor sensor (odor concentration less than 0.1 mg / m³) is reached. 3 To meet the requirements, open the air volume regulating valve 1 and simultaneously close the second electric air volume regulating valve.

[0132] (4) When the indoor carbon dioxide concentration is below 500 PPM, the electric valve on each branch pipe of the corresponding air distribution box in the room is directly closed to 50% of its opening. When the indoor carbon dioxide concentration is between 500 PPM and 1000 PPM, the air valve is no longer adjusted for carbon dioxide concentration measurement. When the indoor carbon dioxide concentration is above 1000 PPM, the valve opening of the corresponding air valve on the branch pipe of the air distribution box in that room is increased to ensure that the carbon dioxide concentration in the room being measured is between 500 PPM and 1000 PPM.

[0133] (5) When the carbon dioxide concentration is between 500PPM and 1000PPM, the opening degree of the corresponding air valve on the branch pipe of the air distribution box of the room increases when the room air humidity value is (the upper limit of the set temperature + 1g / kg), and the opening degree of the corresponding air valve on the branch pipe of the air distribution box of the room decreases when the room air humidity value is lower than (the upper limit of the set temperature - 1g / kg).

[0134] 3. Transitional Season Home Stay Mode

[0135] During the transitional season's stay-at-home mode, control is implemented using the following logic:

[0136] (1) When the duct receives air with an odor, the first odor sensor first determines the odor concentration. When the first odor sensor detects that the fresh air has no odor or the odor has no effect on the human body (odor concentration less than 0.1 mg / m³), the odor is considered neutral. 3 The first electric air volume regulating valve closes and the second electric air volume regulating valve opens to activate the fresh air mode ventilation.

[0137] (2) When the duct receives airflow with an odor (odor concentration greater than 0.1 mg / m³) 3 The first odor sensor first assesses the odor concentration. If the odor concentration exceeds the adsorption capacity of the activated carbon in the duct (odor concentration greater than 0.6 mg / m³), the sensor will detect the odor. 3 The first and second electric airflow regulating valves on the duct are directly closed. If the odor concentration detected by the first odor sensor is greater than 0.6 mg / m³... 3 Activated charcoal can absorb odors, thus enabling odor removal mode:

[0138] a) The first electric air volume regulating valve is opened, and the second electric air volume regulating valve is closed.

[0139] b) Odor-removing activated carbon is used to treat the odor in the fresh air, and then the treated fresh air undergoes a second odor test. A second odor sensor detects the odor concentration (odor concentration less than 0.1 mg / m³). 3 The first electric air volume regulating valve opens, providing continuous ventilation.

[0140] c) If the odor concentration detected by the second odor sensor is still very high (odor concentration greater than 0.1 mg / m³), 3 The first and second electric airflow regulating valves close. This continues until the concentration detected by the first odor sensor (odor concentration less than 0.1 mg / m³) is reached. 3 To meet the requirements, open the air volume regulating valve 1 and simultaneously close the second electric air volume regulating valve.

[0141] (3) The fresh air volume of each room's branch pipe is directly adjusted by the regulating valve to open the electric valve on each branch pipe of the air distribution box to 100% opening.

[0142] The advantage of this control logic is that it can automatically adjust the fresh air volume of each room according to the indoor demand. Under the condition that the total air volume of each household remains unchanged, the fresh air volume of each room can be adjusted at the same time according to the fresh air volume demand of different rooms, thereby improving the utilization efficiency of fresh air and ensuring that fresh air can be truly delivered to the rooms that need it, maximizing the role of fresh air and improving human comfort.

[0143] Figure 3 This is a schematic diagram of the structure of a fresh air control device according to one embodiment of this application, as shown below. Figure 3 As shown, the device includes:

[0144] The first acquisition module 301 is used to acquire the odor concentration through a first odor sensor placed in the air duct when the fresh air system is turned on.

[0145] The first control module 302 is used to control the first electric air volume regulating valve and the second electric air volume regulating valve to close when the odor concentration obtained by the first odor sensor is greater than the first preset value. The first electric air volume regulating valve is located in the first pipeline provided with activated carbon, and the second electric air volume regulating valve is located in the second pipeline without activated carbon.

[0146] The second control module 303 is used to control the first electric air volume regulating valve to open and the second electric air volume regulating valve to close when the odor concentration obtained by the first odor sensor is less than the first preset value and greater than the second preset value. The fresh air entering the fresh air system passes through the first odor sensor and then through the first pipeline and / or the second pipeline.

[0147] In one embodiment, the apparatus further includes:

[0148] The second acquisition module is used to acquire the odor concentration by a second odor sensor installed in the first pipeline, wherein the fresh air entering the fresh air system passes through activated carbon and then passes through the second odor sensor.

[0149] The third control module is used to control the first electric air volume regulating valve to close when the odor concentration obtained by the second odor sensor is still greater than the second preset value.

[0150] In one embodiment, the apparatus further includes:

[0151] The fourth control module is used to control the first electric air volume regulating valve to close and the second electric air volume regulating valve to open when the odor concentration obtained by the first odor sensor is less than the second preset value.

[0152] In one embodiment, the apparatus further includes:

[0153] The third acquisition module is used to acquire the indoor and outdoor air pressure difference when the odor concentration of the fresh air entering the room is less than the second preset value.

[0154] The judgment module is used to determine whether the pressure difference between the indoor and outdoor air in the room is within the preset pressure difference range;

[0155] The adjustment module is used to adjust the opening of the room's air volume regulating valve when the pressure difference between the room's interior and exterior exceeds a preset pressure difference range, so that the pressure difference between the room's interior and exterior falls within the preset pressure difference range.

[0156] In one embodiment, the apparatus further includes:

[0157] The fourth acquisition module is used to acquire the concentration of odors entering the room and the air pressure difference between the indoor and outdoor areas when the fresh air system is in home mode.

[0158] The mode adjustment module is used to enter the carbon dioxide adjustment mode when the concentration of odor entering the room is less than the second preset value and the pressure difference between the indoor and outdoor air is within the preset pressure difference range.

[0159] In one embodiment, the carbon dioxide regulation mode includes:

[0160] Obtain the carbon dioxide concentration in each room;

[0161] When there is a first target room with a carbon dioxide concentration lower than the third preset value, the opening of the electric valve on each branch pipe of the corresponding air distribution box of the first target room is closed.

[0162] When there is a second target room with a carbon dioxide concentration greater than the fourth preset value, increase the opening of the air valve on the branch pipe of the corresponding air distribution box of the second target room so that the carbon dioxide concentration in the second target room is lower than the fourth preset value.

[0163] In one embodiment, the mode adjustment module is further configured to enter a humidity adjustment mode when the carbon dioxide concentration is below a fourth preset value; wherein the humidity adjustment mode includes:

[0164] Obtain the air humidity in each room;

[0165] When there is a third target room with an air humidity value greater than the first humidity value, the opening degree of the air valve on the branch pipe of the corresponding air distribution box of the third target room is increased.

[0166] When there is a fourth target room with an air humidity value lower than the second humidity value, the opening degree of the air valve on the branch pipe of the corresponding air distribution box of the fourth target room is reduced.

[0167] Figure 4 This is a schematic diagram of the hardware structure of a fresh air control system according to one embodiment of this application, as shown below. Figure 4 As shown, the fresh air control system includes:

[0168] At least one processor 420; and,

[0169] Memory 404 communicatively connected to the at least one processor 420; wherein,

[0170] The memory 404 stores instructions that can be executed by the at least one processor 420 to implement the fresh air control method described in any of the above embodiments.

[0171] Reference Figure 4 The fresh air control system 400 may include one or more of the following components: processing component 402, memory 404, power supply component 406, multimedia component 408, audio component 410, input / output (I / O) interface 412, sensor component 414, and communication component 416.

[0172] Processing component 402 typically controls the overall operation of the fresh air control system 400. Processing component 402 may include one or more processors 420 to execute instructions to complete all or part of the steps of the method described above. Furthermore, processing component 402 may include one or more modules to facilitate interaction between processing component 402 and other components. For example, processing component 402 may include a multimedia module to facilitate interaction between multimedia component 408 and processing component 402.

[0173] Memory 404 is configured to store various types of data to support the operation of the fresh air control system 400. Examples of this data include instructions for any application or method operating on the fresh air control system 400, such as text, images, videos, etc. Memory 404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0174] Power supply component 406 provides power to various components of the fresh air control system 400. Power supply component 406 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the vehicle control system 400.

[0175] The multimedia component 408 includes a screen that provides an output interface between the fresh air control system 400 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 408 may also include a front-facing camera and / or a rear-facing camera. When the fresh air control system 400 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0176] Audio component 410 is configured to output and / or input audio signals. For example, audio component 410 includes a microphone (MIC) configured to receive external audio signals when the fresh air control system 400 is in an operating mode, such as alarm mode, recording mode, voice recognition mode, and voice output mode. The received audio signals may be further stored in memory 404 or transmitted via communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.

[0177] I / O interface 412 provides an interface between processing component 402 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0178] Sensor assembly 414 includes one or more sensors for providing status assessments of various aspects of the fresh air control system 400. For example, sensor assembly 414 may include a sound sensor. Additionally, sensor assembly 414 can detect the on / off state of the fresh air control system 400, the relative positioning of components (e.g., the display and keypad of the fresh air control system 400), and the operating status of the fresh air control system 400 or one of its components, such as the operating status of the air distribution panel, structural status, the operating status of the discharge scraper, etc., the orientation or acceleration / deceleration of the fresh air control system 400, and temperature changes of the fresh air control system 400. Sensor assembly 414 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 414 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, a material buildup thickness sensor, or a temperature sensor.

[0179] Communication component 416 is configured to enable the fresh air control system 400 to provide wired or wireless communication capabilities with other devices and cloud platforms. The fresh air control system 400 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 416 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 416 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0180] In an exemplary embodiment, the fresh air control system 400 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described in any of the above embodiments.

[0181] A computer-readable storage medium, when the instructions in the storage medium are executed by a processor corresponding to the fresh air control system, enables the fresh air control system to implement the fresh air control method described in any of the above embodiments.

[0182] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0183] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0184] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0185] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0186] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A fresh air control method, characterized in that, include: When the fresh air system is turned on, the odor concentration is obtained by the first odor sensor placed in the air duct. When the odor concentration obtained by the first odor sensor is greater than the first preset value, the first electric air volume regulating valve and the second electric air volume regulating valve are controlled to close. The first electric air volume regulating valve is located in the first pipeline with activated carbon, and the second electric air volume regulating valve is located in the second pipeline without activated carbon. When the odor concentration obtained by the first odor sensor is less than the first preset value and greater than the second preset value, the first electric air volume regulating valve is opened and the second electric air volume regulating valve is closed. The fresh air entering the fresh air system passes through the first odor sensor and then through the first pipe and / or the second pipe. The second preset value is the highest odor concentration that ensures that the human body cannot feel the odor. The first preset value is a value that is positively correlated with the maximum filtration capacity of the activated carbon in the first pipeline, and is determined by the following formula: in, The first preset value; To adjust the coefficient, For the quality of activated carbon, To preset the expected lifespan of activated carbon, This refers to the usage time of activated carbon. The adsorption efficiency of activated carbon per unit mass for odors.

2. The fresh air control method as described in claim 1, characterized in that, The method further includes: Odor concentration is obtained by a second odor sensor installed in the first pipeline, wherein the fresh air entering the fresh air system passes through activated carbon and then passes through the second odor sensor. When the odor concentration detected by the second odor sensor is still greater than the second preset value, the first electric air volume regulating valve is closed.

3. The fresh air control method as described in claim 1, characterized in that, The method further includes: When the odor concentration detected by the first odor sensor is less than the second preset value, the first electric air volume regulating valve is closed, and the second electric air volume regulating valve is opened.

4. The fresh air control method as described in claim 1, characterized in that, The method further includes: When the odor concentration of the fresh air entering the room is less than the second preset value, the indoor and outdoor air pressure difference is obtained; Determine whether the pressure difference between the indoor and outdoor air in the room is within the preset pressure difference range; When the pressure difference between the room and the outside exceeds the preset pressure difference range, adjust the opening of the room's air volume regulating valve so that the pressure difference between the room and the outside falls within the preset pressure difference range.

5. The fresh air control method as described in claim 1, characterized in that, The method further includes: When the fresh air system is in home mode, it obtains the concentration of odors entering the room and the air pressure difference between the indoor and outdoor areas. When the concentration of odor entering the room is less than the second preset value and the pressure difference between the indoor and outdoor air is within the preset pressure difference range, the carbon dioxide regulation mode is activated.

6. The fresh air control method as described in claim 5, characterized in that, The carbon dioxide regulation modes include: Obtain the carbon dioxide concentration in each room; When there is a first target room with a carbon dioxide concentration lower than the third preset value, the opening of the electric valve on each branch pipe of the corresponding air distribution box of the first target room is closed. When there is a second target room with a carbon dioxide concentration greater than the fourth preset value, increase the opening of the air valve on the branch pipe of the corresponding air distribution box of the second target room so that the carbon dioxide concentration in the second target room is lower than the fourth preset value.

7. The fresh air control method as described in claim 6, characterized in that, When the carbon dioxide concentration is below the fourth preset value, the humidity adjustment mode is activated; the humidity adjustment mode includes: Obtain the air humidity in each room; When there is a third target room with an air humidity value greater than the first humidity value, the opening degree of the air valve on the branch pipe of the corresponding air distribution box of the third target room is increased. When there is a fourth target room with an air humidity value lower than the second humidity value, the opening degree of the air valve on the branch pipe of the corresponding air distribution box of the fourth target room is reduced.

8. A fresh air control device, used in the fresh air control method as described in any one of claims 1-7, characterized in that, include: The first acquisition module is used to acquire the odor concentration through a first odor sensor placed in the air duct when the fresh air system is turned on. The first control module is used to control the first electric air volume regulating valve and the second electric air volume regulating valve to close when the odor concentration obtained by the first odor sensor is greater than the first preset value. The first electric air volume regulating valve is located in the first pipeline with activated carbon, and the second electric air volume regulating valve is located in the second pipeline without activated carbon. The second control module is used to control the first electric air volume regulating valve to open and the second electric air volume regulating valve to close when the odor concentration obtained by the first odor sensor is less than the first preset value and greater than the second preset value. The fresh air entering the fresh air system passes through the first odor sensor and then through the first pipeline and / or the second pipeline.

9. A fresh air control system, characterized in that, include: At least one processor; as well as, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to implement the fresh air control method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor corresponding to the fresh air control system, the fresh air control system is able to implement the fresh air control method as described in any one of claims 1-7.

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