234 results about "Outdoor air quality" patented technology

The invention discloses an air conditioner for automatically adjusting the air quality and an adjusting method thereof. The air conditioner comprises an indoor air quality sensor, an outdoor air quality sensor, an indoor humidity sensor, an outdoor humidity sensor, an indoor dust sensor, an outdoor dust sensor, an indoor temperature sensor, an outdoor temperature sensor and a ventilating device, wherein the ventilating device is at least provided with a PG motor. In addition, the air conditioner also comprises an air quality control module, a humidity control module, a temperature control module and a ventilating control module, wherein the air quality control module is used for comparing indoor air quality data with outdoor air quality data and for generating and outputting a ventilating signal or a non-ventilating signal; the humidity control module is used for comparing indoor humidity data with outdoor humidity data and for generating and outputting a ventilating signal or a non-ventilating signal; the temperature control module is used for comparing indoor temperature data with outdoor temperature data and for generating and outputting a ventilating signal or a non-ventilating signal; and the ventilating control module is used for starting the PG motor to ventilate under the conditions of simultaneously meeting all the ventilating signals and for turning the PG motor off under the condition of meeting part of the ventilating signals. The invention automatically dehumidifies, humidifies and controls the ventilating amount and has a scientific air quality improving method.

The invention relates to a method and a system for adjusting air quality of high-rise buildings by virtue of natural conditions. The method comprises the steps of acquiring index data of air quality of a local area, detecting indoor and outdoor air quality, humidity and temperature as well as outdoor wind power, transmitting detection data to a main control system, working out an air quality control strategy by the main control system according to related data of various detections as well as the index data of the air quality of the local area, sending the air quality control strategy to a local controller by the main control system, and controlling a total heat fresh air ventilator to start and stop ventilating by the local controller. The system comprises various air quality detection devices, a ventilation and air change device, the local controller, a local area network and the main control system, wherein the main control system is connected with an air quality index publishing system. According to the system and the method, both the indoor air condition and the outdoor air condition of the high-rise buildings are taken into account, existing facilities of the high-rise buildings are fully used, relatively ideal air at the best time is gathered, and the air quality of the high-rise buildings is controlled and regulated at low cost when the air contamination is uncertain.

The invention discloses an intelligent purification cabinet type fresh air ventilator. The intelligent purification cabinet type fresh air ventilator comprises a controller and a VOC (Volatile Organic Compounds) concentration sensor connected with the controller, wherein the VOC concentration sensor is arranged in an air return space; the controller is used for adjusting operating air velocities of an air blower and an exhaust fan in real time according to VOC concentrations detected by the VOC concentration sensor at a fixed time interval. Furthermore, the controller is also used for automatically obtaining outdoor air quality indexes periodically, and controlling the air blower and the exhaust fan, and when the outdoor air quality levels are serious pollution and severe pollution, the air blower and the exhaust fan are powered off. According to the intelligent purification cabinet type fresh air ventilator, the VOC concentration sensor, a humidity sensor and a plurality of temperature sensors are arranged inside a shell, so that the intelligent control of the complete machine is realized. The structure inside the shell is reasonably designed, and a three-stage purification device and a negative ion generator are arranged in an air supply channel, so that the quality demand on indoor air is met, and the purification efficiency of fresh air is ensured.

The present invention provides a method for automatically controlling partial functions of an air conditioner and a heat pump water heater based on weather forecast data. According to the method, mainly the control on an air conditioner and the big data of weather forecast are combined, such that the air conditioner can predict and automatically control the opening and the closing of the electricheating tape of a compressor during the standby of the air conditioner according to the temperature change in weather forecast, the amount of new air introduced by an indoor unit can be automaticallycontrolled according to outdoor air quality report data while whether an indoor heat exchanger is clogged by dirt can be judged by combining historical air quality data and the gas discharging temperature or the pressure data of the compressor, the dehumidification period or logic can be automatically established according to local seasonal climate, or the evaporation pressure during cooling can be adjusted sp as to make the air conditioner dehumidify according to the concrete humidity condition, the temperature change at the current day can be predicted, the water boiling temperature can be adjusted, the running period achieving the highest energy efficiency can be determined, and the time for boiling water can be calculated and is transmitted to a client terminal.

The invention discloses a control method based on an air conditioner, the air conditioner, a home system and a storage medium. The control method can be applied to the intelligent home system composedof the air conditioner and other home appliances. By monitoring the carbon dioxide concentration changes of all areas in a room, when the carbon dioxide concentration of any area in the room is larger than a preset threshold value corresponding to the current point-in-time, the outdoor air quality is detected, a fresh air ventilation command or an air purification command is output according to the detected outdoor air quality, the corresponding fresh air ventilation operation or air purification operation is carried out so that the indoor air quality can be improved, and thus the situation that the carbon dioxide concentration is too high and consequently the health of human beings is threatened is avoided.

The invention discloses an air conditioner control system, an air conditioner control method and an air conditioner, which aim to solve the problem that the indoor and outdoor air exchange operations of the air conditioner in the prior art cannot relatively better meet the practical conditions of indoor and outdoor air indexes. The air conditioner control system provided by the invention comprises a first sensor, a second sensor and a controller, wherein the first sensor is used for detecting the indoor air index; the second sensor is used for detecting the outdoor air index; and the controller is connected to the first and second sensors, and is used for controlling the running of an air exchange device according to detection results of the first and second sensors. By the technical scheme provided by the invention, the air conditioner can perform air exhaust operations according to the specific conditions of indoor and outdoor air so as to avoid a user performing the air exhaust operations under the conditions of not knowing the quality and humidity of the outdoor air to reduce the quality of the indoor air or further reduce the humidity.

The invention discloses a small-scale air quality index prediction method and system for a city, which firstly divides a city area into a plurality of to-be-predicted locations in a grid form; and then acquires historical data related to each model, and based on historical data: establishing corresponding correspondences The current time prediction and the time prediction model predicted at each moment in the future time, establish a spatial prediction model for air quality prediction at the specified coordinates, and establish a dynamic prediction model that characterizes the relationship between traffic data and geographic interest point data and air quality index, an indoor and outdoor prediction model that characterizes the relationship between the indoor air quality index and the outdoor air quality index; when performing the prediction, the established time prediction model, the spatial prediction model, and the dynamic prediction are performed for any real-time moments to be predicted. The model and the indoor and outdoor prediction models are cooperatively trained to fuse the prediction results of all the models, that is, the predicted values of the air quality index at each moment in the respective current and future time periods of each to-be-predicted location.

The invention discloses an air conditioner and a control method and device thereof. The air conditioner comprises a heat exchange air flue and an air treatment device. The air treatment device comprises a shell, a fresh air fan and an air purification module. The shell is provided with a fresh air inlet, an indoor air inlet and a main air outlet. The fresh air fan guides air of an air treatment air flue to the main air outlet. The air purification module carries out purification treatment on air of the air treatment air flue. The method comprises the steps that indoor air indexes are acquired in real time; whether indoor air quality is superior to outdoor air quality or not is judged according to the indoor air indexes; if the outdoor air quality is superior to the indoor air quality, the fresh air fan is controlled to guide air entering the air treatment air flue from the fresh air inlet to the main air outlet; and if the indoor air quality is superior to the outdoor air quality, the fresh air fan is controlled to guide air entering the air treatment air flue from the indoor air inlet to the main air outlet. Thus, the efficiency of improving indoor air can be improved, and user experience can be improved.

The invention relates to the technical field of indoor air purification, in particular to an indoor air quality control system which comprises an intelligent air purification device, an external air quality detector and a cloud server. The intelligent air purification device is fixed onto a window of a door window, and indoor air or air which flows into an indoor environment from an outdoor environment can be simultaneously purified by the intelligent air purification device. The indoor air quality control system has the advantages that the outdoor air quality, the wind outlet air quality and state information of diversified electronic elements are collected by the intelligent air purification device and are transmitted to the cloud server, service staffs can actively initiate service such as user equipment upgrading, maintaining and repairing by the aid of cloud analysis, accordingly, the performance of the intelligent air purification device and work of remote control equipment can be guaranteed, and the quality of the indoor air in the aspect of freshness and cleanliness can be guaranteed; the quality of the indoor air far away from the door window can be detected by the external air quality detector, whether purification ventilation effects of the intelligent air purification device or ventilation effects of the door window need to be realized can be intelligently decided according to the quality of the indoor air and the quality of outdoor air, and a door window controller can be driven to execute window opening and closing instructions.

The invention discloses a model fusion-based indoor air prediction method. According to the method, an indoor air quality prediction model and an outdoor air quality prediction model are effectively fused through a classification and regression tree algorithm according to the behaviors and activities of an occupant; the root and each leaf node of a regression tree separately train a linear regression device, so that a plurality of linear regression devices can be obtained; and therefore, the method is suitable for indoor air quality prediction under different conditions. According to the method of the present invention, efficient multi-source data fusion and model fusion are performed on a plurality of data sources such as the activities of a person, indoor air quality, outdoor air qualityand outdoor weather, so that more accurate learning and prediction can be realized.

The invention discloses a window system and method for integrating environment regulation and lighting control functions. The window system includes a window, an air purifier, an outdoor air quality sensor, an outdoor light sensor, an indoor air quality sensor, an indoor light sensor, an intelligent controller, a router, a cloud service platform, a smart phone, a windowsill, curtain rods, curtains and a curtain control motor, wherein the air purifier is installed inside the windowsill, and the windowsill is provided with an internal air inlet-outlet for indoor air to enter the air purifier, and an external air inlet-outlet for outdoor air to enter the air purifier; the outdoor side of the windowsill is provided with the outdoor air quality sensor and the outdoor light sensor, and the indoor air quality sensor, the indoor light sensor and the intelligent controller are installed on the indoor side of the windowsill; the intelligent controller uploads detection results of each sensor and the operating status of the air purifier to the cloud service platform through the router, and finally sends the detection results of each sensor and the operating status of the air purifier to the smart phone.

The invention disclsoes an environment management device (10), which is used to control motion statuses of a ventilation device (31) used for the indoor-outdoor ventilation to change the indoor air quality, an air purifier (32) and an air conditioner (33)used for improving the indoor air quality without the ventilation. The environment management device (10) is provided with an air quality acquisition part (13), an indication part (14), a management processing part (15), and an evaluation part (16). The air quality acquisition part (13) can be used to acquire the indoor and outdoor air quality measurement data from an air quality sensor (21). When the management processing part (15) rates the indoor quality as adverse, when the outdoor air quality is better than the indoor air quality, the ventilation device (31) can be started, and when the indoor air quality is better than the outdoor air quality, at least one of the air purifier (32) and the air conditioner (33) is started.

In an air conditioning economizer system outdoor air intake is reduced automatically by a control device based on a shut-off control setting for a measured outdoor air quality. A geographical location associated with the air conditioning economizer system is received (S2) in the control device. The control device defines automatically (S3) the shut-off control setting based on the geographical location. Thus, the air conditioning economizer system is adapted specifically for a geographic location and its climate zone, without the requirement for installing or operating personnel to determine a shut-off control setting for a specific climate zone and / or select a corresponding operating range.

The invention discloses an indoor air quality adjusting method and system of a large public building. The method comprises the following steps that a remote server reads primary air system air volume and exhaust system air volume information pre-stored in various areas in the large public building, the top and bottom limitation information, set by a building management worker, of the concentration of carbon dioxide, PM2.5 and VOC in indoor air, the top and bottom limitation information, set by the building management worker, of the concentration of PM2.5 in the outdoor air, and the top limitation information, set by the building management worker, of the concentration of sulfur dioxide and nitrogen dioxide in the outdoor air; and the remote server periodically collects data of an indoor air quality monitoring device and data of an outdoor air quality monitoring device, real-time data are compared with the limiting value, and a primary air system and an exhaust system are controlled. According to the indoor air quality adjusting system of the large public building, a primary air device and an exhaust device of the whole building are controlled by the remote server in a centralized manner. Compared with a current system controlled by a single device, the control scale is larger, and the quality of the indoor air of the building can be adjusted from the macroscopic level.

The invention provides an air conditioner control method and system and the air conditioner. The control method of the air conditioner in an automatic mode comprises the steps that the outdoor environment parameter value is detected; whether the outdoor environment parameter value is larger than or equal to a first preset threshold value or not is judged; when the outdoor environment parameter value is smaller than the first preset threshold value, a fresh air mode is started, the air conditioner enters a refrigeration or heating mode, and when the outdoor environment parameter value is no smaller than the first preset threshold value, the indoor environment parameter value is detected; whether the indoor environment parameter value is larger than or equal to a first preset threshold value or not is judged; when the indoor environment parameter value is smaller than the first preset threshold value, the air conditioner is controlled to enter the refrigeration or heating mode, and when the indoor environment parameter value is no smaller than the first threshold value, the outdoor environment parameter value and the indoor environment parameter value are compared; and according to the comparison result, the ventilation mode of the air conditioner is determined. Through the air conditioner control method, the effects that the indoor air quality and the outdoor air quality are monitored in real time and compared to determine the ventilation mode of the air conditioner are achieved, the good indoor air quality is ensured, and multifunctional selection requirement of a user for the air conditioner is met.

The invention discloses an air cleaning device and a control method thereof. The air cleaning device comprises a shell, a cross-flow blade and a main motor, wherein the cross-flow fan is arranged inside the shell, and the main motor is used for driving the cross-flow fan to rotate. The shell is provided with a first air inlet, a second air inlet and an air outlet. The first air inlet is communicated with the outdoor space, and the second air inlet and the air outlet are communicated with the indoor space. A stop plate is arranged on the edge, in the axial line direction of the cross-flow blade, of the air outlet, and the stop plate extends in the center direction. The air cleaning device further comprises an adjusting structure and a filtering assembly, wherein the adjusting structure is used for opening or closing the first air inlet and the second air inlet; the filtering assembly is used for filtering air entering the indoor space. According to the air cleaning device and the control method thereof, a controller is arranged according to indoor and outdoor air quality, indoor air circulation or outdoor air circulation can be switched easily, remote control can be achieved, real-time monitoring can be achieved, and the requirements of modern people for high-quality life can be satisfied.

The embodiment of the invention provides a control method and system of a fresh air system and the fresh air system. The method includes the steps that environmental data is acquired, wherein the environmental data comprises indoor CO2 concentration and indoor PM2.5 concentration; according to a preset indoor CO2 concentration condition and a preset indoor PM2.5 concentration condition, whether the indoor CO2 concentration meets the CO2 concentration condition or not is judged, and whether the indoor PM2.5 concentration meets the PM2.5 concentration condition or not is judged; a control instruction for starting a working mode of the fresh air system is sent according to a judgment result. According to the control method and system of the fresh air system and the fresh air system, different working modes can be automatically started according to the real-time concentration of indoor and outdoor air quality parameters, so that air purification requirements under different air conditions are met.

The invention provides a double-draught-fan type fresh air purifying machine which integrates the fresh air function and the air return function. Air return openings can be distributed in different rooms. At least two draught fans are adopted to each conduct circulation of supplemented fresh air and returned air. Arc-shaped passageways are adopted for a fresh air outlet cavity and a returned air outlet cavity respectively. The requirements for the size and power of each draught fan are remarkably lowered. The fresh air function and the air return function are separated, a fresh air filter element and a returned air filter element are independently designed, and therefore the pertinence of the filter elements is high, the thickness of the filter elements is reduced, the replacement frequency is lowered, and the whole-machine cost is reduced. Cylindrical or platy filter modules with HEPA efficient filter modules are adopted as filter modules which have the powerful wind power regulation function. The ratio of fresh air to indoor circulating air can be freely regulated according to the changes of the outdoor air quality on the basis of the rotating speed of the draught fans instead of regulating an air valve. An intelligent domestic environment regulation controller is arrange and combined with the internet of things technology and the mobile internet technology, and therefore the purification function can be remotely controlled and regulated, and the requirement for environment-friendly residence can be better met.

The invention discloses a method for intelligently controlling a new fan and an air conditioner, wherein the method comprises the following steps of: acquiring an user control habit set P, an outdoor environment comprehensive score Q1, an indoor environment comprehensive score Q2, indoor staff intensity and activity information; when indoor staff density changes are detected to be greater than a set threshold value K or staff activity is detected indoors, starting entering an intelligent control state automatically: taking the user control habit set P as a reference control command, and continuously regulating control output of the air conditioner and the new fan according to deviation between Q1 and Q10 and deviation between Q2 and Q20; and otherwise, keeping the original control command unchanged. According to the method disclosed by the invention, indoor air quality and outdoor air quality are detected intelligently in real time on the basis of considering user control habits; and through intelligent linked control of the air conditioner and the new fan, the air conditioner and the new fan can be more energy-saving and environmentally-friendly while the air conditioner and the new fan meet indoor high-quality air quality, use of users is convenient, and user experience is improved.

The invention discloses a constant-temperature curtain wall system. Blinds of an air inlet and an air outlet of the curtain wall unit of a floor are opened to implement ventilation with the outside. The constant-temperature curtain wall system also comprises an air storage chamber, a purifier and control module, wherein the control module is used for opening or closing the blinds of the air inlet and air outlet of the curtain wall unit according to the air detection result of a PM2.5 detector, and controlling the air storage chamber to open the controller of the floor or not. The curtain wall is opened or closed according to the outdoor air quality, and fresh air is supplied to the room when the curtain wall is closed; besides, a temperature adjuster is arranged in the curtain wall unit and used for refrigerating or heating the air in the middle layer of the curtain wall, thereby forming a thermal-insulation layer; and thus, the building temperature on the inner side of the curtain wall is relatively constant and free from the influence of the outside temperature, thereby achieving the constant-temperature effect. Thus, the energy-saving effect can reach 80%.

The invention discloses an air conditioning system, an adjusting method and an air conditioner adopting the air conditioning system. The air conditioning system comprises a control device, an outdoorfresh air processing device and an indoor air processing device. The control device is connected with the outdoor fresh air processing device and the indoor air processing device. The control device is used for controlling the opening or closing of the outdoor fresh air processing device by monitoring the outdoor air quality parameters, and is used for controlling the indoor air processing deviceto carry out optimization processing on indoor air by monitoring indoor air parameters, until the indoor air meets the normal activity index of the user. The air conditioning system solves the problemthat the air conditioning effect of an air conditioning system in the prior art is not ideal, and improves the conditioning effect of the air conditioning effect.

The invention provides a ventilating device capable of being mounted on a door window or glass curtain wall. The ventilating device can monitor air entering an indoor environment and purify the air as needed, and comprises a ventilating unit, wherein the ventilating unit comprises a frame, an air filtering device, a detecting sensor and a controller; the air filtering device is used for filtering outdoor air; the detecting sensor is used for detecting quality of the indoor air and the quality of the outdoor air; the controller is used for responding received detecting results of the detecting sensor; an air inlet channel and an exhaust channel are formed in the frame; air enters an indoor environment through the air inlet channel; the air is discharged to an outdoor environment through the exhaust channel; the air filtering device is arranged in the air inlet channel; and the controller is used for transmitting a stopping control signal to the air filtering device when the detecting sensor detects that the quality of the outdoor air is excellent, and transmitting a starting control signal to the air filtering device when the detecting sensor detects that the quality of the outdoor air does not reach the standard.

The invention discloses an indoor environment air purification system and method. The system comprises an indoor and outdoor air circulating system, an indoor air circulating system, a control system, an indoor air quality sensor and an outdoor air quality sensor; and the indoor air quality sensor comprises an oxygen concentration sensor and a PM10 concentration sensor, and the outdoor air quality sensor comprises a PM2.5 concentration sensor. According to the indoor environment air purification system and method, different filtering nets and sensors are selected, existing contaminant and contaminant possibly occurring in the future can be purified through the system, and detection and control of indoor oxygen concentration are increased; the sensors are reasonably arranged, various kinds of indoor air are obtained, the distribution conditions of oxygen and contaminant are particularly obtained, and quantified treatment is achieved; the PM2.5 concentration sensor is arranged in an air inlet flue, when the outdoor air quality is beyond of the system purification capacity, an alarm is given to a user, and the service life of the filtering nets is prolonged.

The invention provides an automatic control method for intelligent fresh air purification equipment. The automatic control method for the intelligent fresh air purification equipment comprises the steps that the intelligent fresh air purification equipment is controlled by a main control panel to be switched to a standby state or to other different working modes according to a user command, matching is conducted on prestored air volume regulation parameters according to the user command and / or the outdoor air quality, a command is sent out according to a matching result, and the opening degrees of a fresh air door and an air return door are controlled. According to the automatic control method for the intelligent fresh air purification equipment, on the one hand, outdoor fresh air can be introduced into a room, so that the high oxygen content of indoor air is kept; and on the other hand, automatic control can be achieved in an intelligent mode, operation is convenient, and accuracy and reliability are guaranteed.

The invention relates to air quality detection technology, and provides an air quality detection method and device. The air quality detection method and device aim at achieving wide-range detection on air quality. The air quality detection method based on an intelligent air conditioner includes the following steps that an air quality detection module of the intelligent air conditioner detects outdoor air quality parameters and transmits the outdoor air quality parameters and ID of the intelligent air conditioner to a cloud platform through a communication module; the ID sent by the intelligent air conditioner is matched through the cloud platform so that geographical location information of the intelligent air conditioner can be acquired, and conducts comprehensive calculation and analysis on the outdoor air quality parameters sent by the intelligent air conditioner so that regional air quality situations can be acquired. The invention further provides the intelligent air conditioner with the air quality detection function and an air quality detection system containing the intelligent air conditioner. The air quality detection method, device and system are suitable for air quality detection.

The invention discloses a fresh air exchange control method. The method comprises the steps that the real-time indoor VOC concentration and the real-time indoor carbon dioxide concentration are obtained and compared with VOC set standard-exceeding conditions and carbon dioxide set standard-exceeding conditions; if the real-time indoor VOC concentration meets the VOC set standard-exceeding conditions, fresh air exchange is started; and if the real-time indoor VOC concentration does not meet the VOC set standard-exceeding conditions, however, the real-time indoor carbon dioxide concentration meets the carbon dioxide set standard-exceeding conditions, fresh air exchange is started when real-time outdoor air quality indexes meet outdoor air quality set conditions and real-time outdoor environment temperature meets outdoor environment temperature set conditions. By applying the fresh air exchange control method, indoor air quality and temperature can be both considered, and indoor environment comfort is improved.

The invention provides an intelligent interconnection air purification system and an air purification method which can be used for improving the indoor air purification efficiency. The system comprises an indoor air quality detecting sensor, an air purification controller, an air purifier and a fresh air ventilator, wherein the indoor air quality detecting sensor is used for transmitting detectedindoor air quality data to the air purification controller in a wireless mode; the air purification controller is used for obtaining outdoor air quality data from a cloud server, generating a fresh air control instruction for controlling the operating state of the fresh air ventilator according to the outdoor air quality data and the indoor air quality data, transmitting the fresh air control instruction to the fresh air ventilator in a wireless mode, generating a purification control instruction for controlling the operating state of the air purifier according to the generated fresh air control instruction and the indoor air quality data, and transmitting the purification control instruction to the air purifier in a wireless mode; the air purifier is used for starting or closing accordingto the purification control instruction; and the fresh air ventilator is used for correspondingly starting or closing according to the received purification control instruction.

In an air conditioning economizer system outdoor air intake is reduced automatically by a control device based on a shut-off control setting for a measured outdoor air quality. A geographical location associated with the air conditioning economizer system is received (S2) in the control device. The control device defines automatically (S3) the shut-off control setting based on the geographical location. Thus, the air conditioning economizer system is adapted specifically for a geographic location and its climate zone, without the requirement for installing or operating personnel to determine a shut-off control setting for a specific climate zone and / or select a corresponding operating range.

The invention discloses a method and system for self-adaptation control over air conditioning of an air conditioner. The method includes the following steps of S1, obtaining indoor personnel information, determining whether there is a person in a room, executing the step S2 if there is the person in the room, and stopping the air conditioner or running the air conditioner at low loads if there isno person in the room; S2, obtaining time information, real-time weather information, indoor and outdoor air quality, temperature, humidity and user health data; and S3, determining environmental conditions based on the acquired time information, real-time weather information, indoor and outdoor air quality, temperature and humidity, determining the user state based on the user health data, and determining on-off and operating parameters of all functions of the air conditioner based on the environmental conditions and the user state. By means of the method and the system, the temperature and humidity of air can be adjusted, the air conditioner can be stopped and a window can be opened intelligently for real fresh air exchange when necessary, the user experience is improved, power consumption is reduce, and air conditioning, energy conservation, environmental protection and ambient air quality are taken into consideration.

The invention discloses a control method and device for a fresh air machine. The control method includes the following steps of obtaining current outdoor air quality, regulating the working gear of the fresh air machine according to the current outdoor air quality so as to achieve the regulated working gear, and controlling the fresh air machine to operate according to the regulated working gear. According to the control method, the outdoor air quality is detected, the operating gear of the fresh air machine is controlled according to the outdoor air quality, and the situation that a large amount of outdoor air is still introduced when the outdoor air quality is poor is avoided. In combination with the outdoor air quality, the operating gear of the fresh air machine is intelligently regulated and controlled, and therefore the quality of indoor air can be regulated more effectively, regulation efficiency is high, and energy loss is low.