The air flow path in the fresh air system is affected by a variety of factors, which work together to ensure efficient operation of the system and good air quality. The following are the main factors that affect the path of air flow in a fresh air system:

 System design
1. Layout design: The design of the fresh air system begins with the overall layout. The layout design of the system's pipes, tuyere and filters directly determines the air flow path. The proper layout ensures the smooth flow of air in the system, avoiding dead corners or dust accumulation.
2. Pipeline size: The size of the pipeline is also an important factor affecting air flow. Too large or too small a pipe will affect the speed and flow of air. The right pipe size ensures that air flows at the right speed while reducing energy loss.

Air flow direction1. Inlet and outlet position: The inlet and outlet position of the fresh air system has an important impact on the air flow path. The air inlet should be located in a place with good outdoor air quality, while the air outlet should be located in an indoor space where fresh air is needed. Reasonable air inlet and outlet position settings can ensure smooth and efficient air flow. 2. Airflow direction design: The design of the airflow direction should follow the principles of aerodynamics to ensure that the air flows in the system with the shortest path and the lowest resistance. At the same time, airflow should be avoided to generate vortex or backflow in the system to reduce energy loss and noise reduction.Filtration system1. Filter type: The filter in the fresh air system has an important influence on the air flow path. Different types of filters have different filtration effects and resistance on air. Choosing the right filter type can ensure that the air keeps flowing smoothly during the filtration process, while effectively removing pollutants such as dust, pollen, bacteria and other pollutants in the air. 2. Filter cleaning and replacement: As the use time increases, the filter will gradually accumulate dust and dirt, resulting in increased resistance and affecting air flow. Therefore, regular cleaning and replacement of filters are important measures to keep the fresh air system running efficiently.

Equipment performance1. Fan performance: The fan in the fresh air system is the key equipment to drive air flow. The performance of the fan directly affects the flow rate and flow rate of the air. An efficient fan can provide sufficient power to ensure that air flows at the appropriate speed within the system. 2. System sealing: The sealing of the fresh air system also has an important impact on the air flow path. Good sealing performance reduces energy losses and ensures that air flows with minimal resistance within the system. Therefore, when installing and maintaining the fresh air system, attention should be paid to maintaining the sealing of the system.

External environmental factors1. Outdoor climate: Outdoor climate conditions such as temperature, humidity, wind speed, etc. will affect the air flow path of the fresh air system. When designing and managing fresh air systems, local climate characteristics should be considered to ensure that the system can operate efficiently in all environments. 2. Building structure: The structure of the building also has an impact on the air flow path of the fresh air system. Different building structures have different effects on air conduction and diffusion, so the characteristics of the building structure should be considered when designing fresh air systems.

To sum up, the factors that affect the air flow path in the fresh air system include system design, airflow direction, filtration system, equipment performance, and external environmental factors. These factors work together to ensure efficient operation of the fresh air system and good air quality. In practical applications, these factors should be considered in a comprehensive manner based on specific circumstances to achieve the best air flow path and the best indoor air quality.