
The exhaust resistance of the micro air pump is also a relatively complex and variable parameter, which is affected by many factors, including the type of pump, the design of the exhaust pipe, the type of load connected to the exhaust port and the operating environment. Therefore, it is impossible to give a uniform and specific exhaust end resistance value.
In the application of micro air pump, the size of exhaust resistance directly affects the performance and stability of the pump. In general, if the exhaust end resistance is small, that is, the exhaust is very smooth, directly to the atmosphere, then the pump will be relatively high efficiency. However, if the exhaust end resistance is large, such as the existence of valves, small bends, large damping sensors, non-dedicated silencers, exhaust below the liquid level or gas discharged to a closed or semi-closed container, then the pump needs to overcome these resistance in order to successfully exhaust, which may increase the power consumption of the pump, reduce its work efficiency, and even affect the service life of the pump.
In order to accurately evaluate the exhaust resistance of the micro air pump and select the appropriate pump type, the technical parameters of the pump are usually referred to, such as the "maximum allowable resistance of the exhaust port" (Por value). This parameter is determined by the manufacturer during the design and testing process and represents the maximum resistance that the pump can withstand at the exhaust end. By comparing the actual exhaust resistance with the Por value of the pump, it can be judged whether the pump can work normally under the given working conditions.
In addition, other factors need to be considered in the selection, such as flow rate, vacuum degree, medium temperature, electromagnetic interference, and pump reliability. These factors will affect the performance and scope of application of the pump. Therefore, when choosing a micro air pump, it is recommended to make comprehensive consideration according to the specific application scenarios and needs, and consult professionals or manufacturers to obtain more accurate recommendations.
In general, the exhaust resistance of the micro air pump is a parameter that needs to be comprehensively considered according to the actual situation and the technical parameters of the pump. In the selection, various factors should be fully considered to ensure that the selected pump can meet the actual needs and has good performance and stability.

