Ternary intelligent exhaust and air supply system and method thereof

Abstract

The invention discloses a ternary type intelligent exhaust and air supply system and method, and the system comprises a ternary type exhaust module which is used for exhausting waste gas of a living room, a kitchen and a toilet; the intelligent air supply module is used for extracting outdoor air, filtering the outdoor air and then quantitatively supplying air according to the indoor environment; and the environment monitoring module is used for detecting the indoor air quality and the safety condition. The indoor air exhausting and supplementing system has the advantage of high efficiency, and the problems that in the using process of an existing indoor air exhausting and supplementing system, efficient air exhausting and supplementing are not convenient, waste gas generated indoors is prone to being accumulated, the air quality and the living comfort are reduced, and the body health of indoor personnel is affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building air conditioning, and in particular to a three-element intelligent exhaust and air supply system and a method thereof. Background Art

[0002] The three-way intelligent exhaust and air supply system is a type of building air conditioning equipment. In high-rise buildings, due to the increase in floor height, the effect of natural ventilation is limited, and a more effective ventilation solution is needed. The three-way intelligent exhaust and air supply system can exhaust and supply air to the living room, kitchen and bathroom for effective ventilation. As people's awareness of quality of life and health increases, improving indoor air quality becomes more and more important. Therefore, it is necessary to effectively treat the exhaust gas from the kitchen, bathroom, living room and bedroom to avoid air pollution.

[0003] The indoor exhaust device and air supply device and their control method with Chinese patent application number 201810736492.9, when the air in the kitchen or bathroom is polluted and the exhaust device is operated, realizes air supply by judging the necessity of air supply, thereby preventing the pollution source from spreading to other indoor spaces and improving the exhaust efficiency so that the pollution source can be quickly discharged to the outside. The control method of the indoor exhaust device of the present invention for achieving this purpose includes the following steps: a) step of exhausting indoor air to the outside according to the exhaust device operation information; b) step of judging whether it is necessary to supply air to the room; c) step of generating air supply information to supply air from the air supply device to the room when it is judged that the supply is necessary.

[0004] The existing indoor exhaust and air supply systems are not convenient for efficient exhaust and air supply during use, which easily leads to the accumulation of waste gas generated indoors, reduces air quality and living comfort, and affects the health of indoor people. Summary of the invention

[0005] The purpose of the present invention is to provide a three-way intelligent exhaust and air supply system and method thereof, which has the advantage of high efficiency and solves the problem that the existing indoor exhaust and air supply systems are not convenient for efficient exhaust and air supply during use, which easily leads to accumulation of waste gas generated indoors, reduces air quality and living comfort, and affects the health of indoor people.

[0006] To achieve the above object, the present invention provides the following technical solution: a three-way intelligent exhaust and air supply system, comprising:

[0007] Three-way exhaust module: The three-way exhaust module is used to exhaust the exhaust gas from the living room, kitchen and bathroom;

[0008] Intelligent air supply module: The intelligent air supply module draws outdoor air, filters the outdoor air, and then quantitatively supplies air according to the indoor environment;

[0009] Environmental monitoring module, which detects indoor air quality and safety conditions;

[0010] Intelligent control module: The intelligent control module receives and analyzes the detection data of the environmental monitoring module, and controls the three-way exhaust module and the intelligent air supply module according to the analysis results and preset user settings.

[0011] As a preferred embodiment of the three-component intelligent exhaust and air supply system of the present invention, the three-component exhaust module includes a high-efficiency fan, a ventilation duct and a connecting piece. The connecting piece connects the high-efficiency fan and the ventilation duct. The air inlet end of the ventilation duct is installed in the living room, kitchen and bathroom. The high-efficiency fan extracts the exhaust gas through the connecting piece and the ventilation duct.

[0012] As a preferred embodiment of the three-component intelligent exhaust and air supply system of the present invention, the three-component exhaust module also includes an induction device, which is a guide plate or a nozzle. The induction device is installed in the exhaust path of the ventilation duct to guide the airflow direction and improve the exhaust efficiency.

[0013] As a preferred embodiment of the three-component intelligent exhaust and air replenishment system of the present invention, the three-component exhaust module also includes an air extraction sealing plate module, which is a drawer-type exhaust sealing plate installed at the air inlet end of the ventilation duct to control the air intake volume.

[0014] As a preferred embodiment of the three-component intelligent exhaust and air supply system of the present invention, the three-component exhaust module also includes an anti-backflow module, which is a check valve or a one-way valve. The anti-backflow module is installed at the air outlet end of the ventilation duct to prevent external air from flowing back into the room.

[0015] As a preferred embodiment of the three-element intelligent exhaust and air supply system of the present invention, the intelligent air supply module includes a filtering unit, an intelligent air supply fan and an intelligent regulating valve. The filtering unit is installed at the air inlet end of the intelligent air supply fan to filter dust and pollutants in the extracted air. The intelligent regulating valve is installed at the air outlet end of the intelligent air supply fan to control the air outlet volume of the intelligent air supply fan and maintain the indoor pressure state.

[0016] As a preferred embodiment of the three-element intelligent exhaust and air supply system of the present invention, the intelligent air supply fan includes a brushless DC motor, a centrifugal impeller and a speed controller. The speed controller controls the speed of the brushless DC motor. The brushless DC motor drives the centrifugal impeller to rotate to generate sufficient negative pressure to extract and push air through the curved air supply pipe. The filter unit includes a primary filter, a high-efficiency filter, an activated carbon filter layer and an electrostatic dust removal device. The primary filter captures larger particles and extends the service life of the subsequent high-efficiency filter. The high-efficiency filter effectively filters tiny particles to ensure air quality. The activated carbon filter layer adsorbs volatile organic compounds, odors and other chemical pollutants. The electrostatic dust removal device uses the principle of static electricity to further improve the purification efficiency. The intelligent regulating valve includes an electric actuator, a valve, a position sensor and a sealing assembly. The position sensor detects the angle position of the valve core inside the valve, and then transmits the detection data to the electric actuator. The electric actuator controls the opening and closing angle of the valve according to the instructions and detection data of the intelligent control module. The sealing assembly is installed on the valve to ensure that the valve maintains air tightness when closed.

[0017] As a preferred embodiment of the three-element intelligent exhaust and air supply system of the present invention, the environmental monitoring module includes an air quality sensor, a smoke sensor, an odor sensor, an air temperature sensor, an air oxygen content sensor and an air pressure sensor, which are used to detect indoor particulate matter, harmful gases, smoke particles, volatile organic compounds, indoor ambient temperature, indoor air oxygen ratio and indoor ambient pressure.

[0018] As a preferred embodiment of the three-element intelligent exhaust and air supply system of the present invention, the intelligent control module includes a central processing unit, a sensor interface, a communication interface and a cloud server. The sensor interface is connected to the environmental monitoring module, converts the analog signal into a digital signal, and then transmits it to the central processing unit for analysis. The central processing unit is connected to the cloud server through the communication interface.

[0019] The three-way intelligent exhaust and air supply method comprises the following steps:

[0020] S1. Initialize the system, install the three-way exhaust module, intelligent air supply module, environmental monitoring module and intelligent control module, and connect them to the power supply and network;

[0021] S2, automatic mode operation. The three-way intelligent exhaust and air supply system is in automatic mode during daily use. The intelligent control module automatically adjusts the working status of the three-way exhaust module and the intelligent air supply module according to the real-time data provided by the environmental monitoring module. The environmental monitoring module continuously monitors the indoor air quality and data indicators, and sends this information to the central processor. The central processor analyzes the received data and decides when to start the exhaust or air supply operation, as well as the corresponding intensity and frequency according to the preset logic and user settings.

[0022] S3, manual intervention operation, the user accesses the cloud server through the mobile terminal, and then inputs instructions to the intelligent control module to adjust the working state of the three-way exhaust module and the intelligent air supply module. The instructions include adjusting the exhaust volume or adjusting the air supply volume;

[0023] S4, emergency response: when abnormally high concentrations of hazardous substances or other safety hazards are detected, the intelligent control module automatically takes emergency measures to increase the exhaust rate or close the air inlet, and sends an immediate notification to the user;

[0024] S5. When the three-way exhaust module is installed in a high-rise building, exhaust is carried out on one side on the left or right side of the 1st to 17th floors. When it is on the 18th floor and above, exhaust is carried out alternately on the left and right sides. The height of the induction device is 0.7m or 1-2m. The intelligent air supply module is opened from the 2nd floor of the building for air supply.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention can process exhaust gas from the living room, kitchen and bathroom through the coordinated use of a three-way exhaust module, an intelligent air supply module, an environmental monitoring module and an intelligent control module. This multi-purpose function enables a single system to meet the ventilation needs of multiple rooms in a building. The system uses high-performance and energy-saving components to reduce energy consumption and environmental impact, and can automatically adjust the operating mode according to actual needs, such as intelligent air supply and 24-hour circulating exhaust. Induction devices are set in the system, which can guide air flow to ensure effective exhaust gas discharge. The intelligent air supply module can replenish fresh air while removing dirty air. The system supports 24-hour uninterrupted operation to maintain indoor air quality.

[0027] 2. For high-rise buildings, the present invention uses exhaust methods for different floors. On the 1st to 17th floors, exhaust on one side can effectively utilize natural airflow and reduce the need for mechanical exhaust. From the 18th floor and above, alternating exhaust on the left and right sides helps to distribute the airflow more evenly, avoid local pressure imbalance, and improve the overall exhaust efficiency. The induction device is installed at a height of 0.7m or 1-2m to guide the direction of the airflow and further improve the exhaust efficiency. Air is replenished from the 2nd floor of the building. Combined with the characteristics of high-rise buildings, it ensures that fresh air can smoothly enter each floor and maintain good ventilation conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a system block diagram of the present invention;

[0029] Figure 2 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0030] Example 1

[0031] See also Figure 1 , three-way intelligent exhaust and air supply system, including:

[0032] Three-way exhaust module: The three-way exhaust module is used to exhaust the exhaust gas from the living room, kitchen and bathroom;

[0033] Intelligent air supply module: The intelligent air supply module draws outdoor air, filters the outdoor air, and then quantitatively supplies air according to the indoor environment;

[0034] Environmental monitoring module, which detects indoor air quality and safety conditions;

[0035] Intelligent control module: The intelligent control module receives and analyzes the detection data of the environmental monitoring module, and controls the three-way exhaust module and the intelligent air supply module according to the analysis results and preset user settings.

[0036] Furthermore, the three-way exhaust module includes a high-efficiency fan, a ventilation duct and a connector. The connector connects the high-efficiency fan and the ventilation duct. The air inlet end of the ventilation duct is installed in the living room, kitchen and bathroom. The high-efficiency fan extracts the exhaust gas through the connector and the ventilation duct.

[0037] Furthermore, the three-way exhaust module also includes an induction device, which is a guide plate or a nozzle. The induction device is installed in the exhaust path of the ventilation duct to guide the airflow direction and improve the exhaust efficiency.

[0038] Furthermore, the three-way exhaust module also includes an air extraction sealing plate module, which is a drawer-type exhaust sealing plate. The exhaust sealing plate is installed at the air inlet end of the ventilation duct to control the air intake volume.

[0039] Furthermore, the three-way exhaust module also includes an anti-backflow module, which is a check valve or a one-way valve. The anti-backflow module is installed at the air outlet end of the ventilation duct to prevent external air from flowing back into the room.

[0040] Furthermore, the intelligent air supply module includes a filtering unit, an intelligent air supply fan and an intelligent regulating valve. The filtering unit is installed at the air inlet end of the intelligent air supply fan to filter dust and pollutants in the extracted air. The intelligent regulating valve is installed at the air outlet end of the intelligent air supply fan to control the air outlet volume of the intelligent air supply fan and maintain the indoor pressure state.

[0041] Furthermore, the intelligent air supply fan includes a brushless DC motor, a centrifugal impeller and a speed controller. The speed controller controls the speed of the brushless DC motor. The brushless DC motor drives the centrifugal impeller to rotate to generate sufficient negative pressure to extract and push air through the curved air supply pipe. The filter unit includes a primary filter, a high-efficiency filter, an activated carbon filter layer and an electrostatic dust removal device. The primary filter captures larger particles and extends the service life of the subsequent high-efficiency filter. The high-efficiency filter effectively filters tiny particles to ensure air quality. The activated carbon filter layer adsorbs volatile organic compounds, odors and other chemical pollutants. The electrostatic dust removal device uses the principle of static electricity to further improve the purification efficiency. The intelligent regulating valve includes an electric actuator, a valve, a position sensor and a sealing assembly. The position sensor detects the angular position of the valve core inside the valve, and then transmits the detection data to the electric actuator. The electric actuator controls the opening and closing angles of the valve according to the instructions and detection data of the intelligent control module. The sealing assembly is installed on the valve to ensure that the valve maintains air tightness when closed.

[0042] Furthermore, the environmental monitoring module includes an air quality sensor, a smoke sensor, an odor sensor, an air temperature sensor, an air oxygen content sensor and an air pressure sensor, which are used to detect indoor particulate matter, harmful gases, smoke particles, volatile organic compounds, indoor ambient temperature, indoor air oxygen ratio and indoor ambient pressure.

[0043] Furthermore, the intelligent control module includes a central processing unit, a sensor interface, a communication interface and a cloud server. The sensor interface is connected to the environmental monitoring module to convert the analog signal into a digital signal, which is then transmitted to the central processing unit for analysis. The central processing unit is connected to the cloud server via the communication interface.

[0044] Through the coordinated use of the three-way exhaust module, the intelligent air supply module, the environmental monitoring module and the intelligent control module, it is able to process exhaust gas from the living room, kitchen and bathroom. This multi-purpose function allows a single system to meet the ventilation needs of multiple rooms in a building. The system uses high-performance and energy-saving components to reduce energy consumption and environmental impact, and can automatically adjust the operating mode according to actual needs, such as intelligent air supply and 24-hour circulating exhaust. The system is equipped with induction devices that can guide air flow to ensure effective exhaust gas discharge. The intelligent air supply module can replenish fresh air while removing dirty air. The system supports 24-hour uninterrupted work to maintain indoor air quality.

[0045] Through the multi-stage filtration unit in the intelligent air supply module, dust, pollen, PM2.5 and other particulate matter and harmful gases in the air can be effectively removed to ensure that the fresh air introduced is clean. The environmental monitoring module continuously monitors the indoor air quality parameters and feeds back the data to the intelligent control module to dynamically adjust the air supply volume and exhaust intensity to maintain the best air quality. The intelligent air supply module is based on a learning algorithm and can identify the user's daily activity patterns and predict future ventilation needs. It minimizes energy consumption without affecting comfort, and can help stabilize indoor temperature and humidity levels by precisely adjusting the air intake to create a more comfortable living environment.

[0046] When abnormally high concentrations of hazardous substances or other safety hazards are detected, the system will automatically take emergency measures, such as increasing the exhaust rate, closing air intakes in certain areas, and sending instant notifications to users. The anti-backflow module prevents external air from flowing back into the room, especially in bad weather or severe external pollution, to ensure the safety of the indoor environment. The system can monitor the service life of the filter and notify the user when it needs to be replaced to avoid equipment damage due to long-term lack of maintenance. The intelligent regulating valve and speed controller ensure that the fan is always in the best working condition, reducing mechanical wear and extending the service life of the overall system. Users can view the current status and make necessary setting changes through the smartphone application. With the help of the cloud service platform, users can obtain data analysis reports, history query and other functions, and support OTA firmware updates to keep the system up to date.

[0047] Example 2

[0048] See also Figure 2 , a three-way intelligent exhaust and air replenishment method, comprising the following steps:

[0049] S1. Initialize the system, install the three-way exhaust module, intelligent air supply module, environmental monitoring module and intelligent control module, and connect them to the power supply and network;

[0050] S2, automatic mode operation. The three-way intelligent exhaust and air supply system is in automatic mode during daily use. The intelligent control module automatically adjusts the working status of the three-way exhaust module and the intelligent air supply module according to the real-time data provided by the environmental monitoring module. The environmental monitoring module continuously monitors the indoor air quality and data indicators, and sends this information to the central processor. The central processor analyzes the received data and decides when to start the exhaust or air supply operation, as well as the corresponding intensity and frequency according to the preset logic and user settings.

[0051] S3, manual intervention operation, the user accesses the cloud server through the mobile terminal, and then inputs instructions to the intelligent control module to adjust the working state of the three-way exhaust module and the intelligent air supply module. The instructions include adjusting the exhaust volume or adjusting the air supply volume;

[0052] S4, emergency response: when abnormally high concentrations of hazardous substances or other safety hazards are detected, the intelligent control module automatically takes emergency measures to increase the exhaust rate or close the air inlet, and sends an immediate notification to the user;

[0053] S5. When the three-way exhaust module is installed in a high-rise building, exhaust is carried out on one side on the left or right side of the 1st to 17th floors. When it is on the 18th floor and above, exhaust is carried out alternately on the left and right sides. The height of the induction device is 0.7m or 1-2m. The intelligent air supply module is opened from the 2nd floor of the building for air supply.

[0054] The environmental monitoring module continuously monitors indoor air quality and data indicators, and sends this information to the central processor to ensure that the system can respond in time according to actual conditions and maintain optimal air quality. The intelligent air supply module introduces fresh air that has been filtered through multiple stages to effectively remove pollutants and ensure that residents breathe clean and healthy air. In daily use, the system is in automatic mode, and the intelligent control module automatically adjusts the exhaust or air supply operation according to the preset logic and user settings, avoiding unnecessary energy waste. Based on the learning algorithm, the system can identify the user's daily activity patterns, predict future ventilation needs, and minimize energy consumption without affecting comfort. Regardless of temperature, humidity or air quality, the system can maintain an ideal indoor environment by intelligently adjusting valves and fan speeds, and provide a quiet living space by using low-noise designed DC brushless motors and centrifugal impellers.

[0055] When abnormally high concentrations of hazardous substances or other safety hazards are detected, the system will automatically take emergency measures and send instant notifications to users to ensure the safety of occupants. By setting up an anti-backflow module, external air can be prevented from flowing back into the room to ensure the safety of the indoor environment. Users can access the cloud server through mobile terminals to adjust the operating status of the system without being restricted by geographical location, which greatly facilitates user operations. With the help of the cloud service platform, users can obtain data analysis reports, historical record queries and other functions, and it also supports OTA firmware updates to keep the system up to date.

[0056] For high-rise buildings, this method specially designs the exhaust methods for different floors. On the 1st to 17th floors, exhaust on one side can effectively utilize natural airflow and reduce the need for mechanical exhaust. From the 18th floor and above, alternating exhaust on the left and right sides helps to distribute the airflow more evenly, avoid local pressure imbalance, and improve the overall exhaust efficiency. The induction device is installed at a height of 0.7m or 1-2m to guide the direction of the airflow and further improve the exhaust efficiency. Air replenishment starts from the 2nd floor of the building. Combined with the characteristics of high-rise buildings, it ensures that fresh air can smoothly enter each floor and maintain good ventilation conditions.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Three-way intelligent exhaust and air supply system, characterized in that: include: Three-way exhaust module: The three-way exhaust module is used to exhaust the exhaust gas from the living room, kitchen and bathroom; Intelligent air supply module: The intelligent air supply module draws outdoor air, filters the outdoor air, and then quantitatively supplies air according to the indoor environment; Environmental monitoring module, which detects indoor air quality and safety conditions; Intelligent control module: The intelligent control module receives and analyzes the detection data of the environmental monitoring module, and controls the three-way exhaust module and the intelligent air supply module according to the analysis results and preset user settings.

2. The three-way intelligent exhaust and air supply system according to claim 1 is characterized in that: The three-way exhaust module includes a high-efficiency fan, a ventilation duct and a connector. The connector connects the high-efficiency fan and the ventilation duct. The air inlet end of the ventilation duct is installed in the living room, kitchen and bathroom. The high-efficiency fan extracts exhaust gas through the connector and the ventilation duct.

3. The three-way intelligent exhaust and air supply system according to claim 2 is characterized in that: The three-element exhaust module also includes an induction device, which is a guide plate or a nozzle. The induction device is installed in the exhaust path of the ventilation duct to guide the airflow direction and improve the exhaust efficiency.

4. The three-way intelligent exhaust and air supply system according to claim 2 is characterized in that: The three-way exhaust module also includes an air extraction sealing plate module, which is a drawer-type exhaust sealing plate. The exhaust sealing plate is installed at the air inlet end of the ventilation duct to control the air intake volume.

5. The three-way intelligent exhaust and air supply system according to claim 2 is characterized in that: The three-way exhaust module also includes an anti-backflow module, which is a check valve or a one-way valve. The anti-backflow module is installed at the air outlet end of the ventilation duct to prevent external air from flowing back into the room.

6. The three-way intelligent exhaust and air supply system according to claim 1 is characterized in that: The intelligent air supply module includes a filtering unit, an intelligent air supply fan and an intelligent regulating valve. The filtering unit is installed at the air inlet end of the intelligent air supply fan to filter dust and pollutants in the extracted air. The intelligent regulating valve is installed at the air outlet end of the intelligent air supply fan to control the air outlet volume of the intelligent air supply fan and maintain the indoor pressure state.

7. The three-way intelligent exhaust and air supply system according to claim 6 is characterized in that: The intelligent air supply fan includes a brushless DC motor, a centrifugal impeller and a speed controller. The speed controller controls the speed of the brushless DC motor. The brushless DC motor drives the centrifugal impeller to rotate to generate sufficient negative pressure to extract and push air through the curved air supply pipe. The filter unit includes a primary filter, a high-efficiency filter, an activated carbon filter layer and an electrostatic dust removal device. The primary filter captures larger particles and extends the service life of the subsequent high-efficiency filter. The high-efficiency filter effectively filters tiny particles to ensure air quality. The activated carbon filter layer adsorbs volatile organic compounds, odors and other chemical pollutants. The electrostatic dust removal device uses the principle of static electricity to further improve the purification efficiency. The intelligent regulating valve includes an electric actuator, a valve, a position sensor and a sealing assembly. The position sensor detects the angular position of the valve core inside the valve, and then transmits the detection data to the electric actuator. The electric actuator controls the opening and closing angles of the valve according to the instructions and detection data of the intelligent control module. The sealing assembly is installed on the valve to ensure that the valve maintains air tightness when closed.

8. The three-way intelligent exhaust and air supply system according to claim 1 is characterized in that: The environmental monitoring module includes an air quality sensor, a smoke sensor, an odor sensor, an air temperature sensor, an air oxygen content sensor and an air pressure sensor, which are used to detect indoor particulate matter, harmful gases, smoke particles, volatile organic compounds, indoor ambient temperature, indoor air oxygen ratio and indoor ambient pressure.

9. The three-way intelligent exhaust and air supply system according to claim 6 is characterized in that: The intelligent control module includes a central processing unit, a sensor interface, a communication interface and a cloud server. The sensor interface is connected to the environmental monitoring module to convert analog signals into digital signals, which are then transmitted to the central processing unit for analysis. The central processing unit is connected to the cloud server via the communication interface.

10. A three-way intelligent exhaust and air supply method, applicable to the three-way intelligent exhaust and air supply system according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Initialize the system, install the three-way exhaust module, intelligent air supply module, environmental monitoring module and intelligent control module, and connect them to the power supply and network; S2, automatic mode operation. The three-way intelligent exhaust and air supply system is in automatic mode during daily use. The intelligent control module automatically adjusts the working status of the three-way exhaust module and the intelligent air supply module according to the real-time data provided by the environmental monitoring module. The environmental monitoring module continuously monitors the indoor air quality and data indicators, and sends this information to the central processor. The central processor analyzes the received data and decides when to start the exhaust or air supply operation, as well as the corresponding intensity and frequency according to the preset logic and user settings. S3, manual intervention operation, the user accesses the cloud server through the mobile terminal, and then inputs instructions to the intelligent control module to adjust the working state of the three-way exhaust module and the intelligent air supply module. The instructions include adjusting the exhaust volume or adjusting the air supply volume; S4, emergency response: when abnormally high concentrations of hazardous substances or other safety hazards are detected, the intelligent control module automatically takes emergency measures to increase the exhaust rate or close the air inlet, and sends an immediate notification to the user; S5. When the three-way exhaust module is installed in a high-rise building, exhaust is carried out on one side on the left or right side of the 1st to 17th floors. When it is on the 18th floor and above, exhaust is carried out alternately on the left and right sides. The height of the induction device is 0.7m or 1-2m. The intelligent air supply module is opened from the 2nd floor of the building for air supply.

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