Tunnel fan, also known as tunnel jet fan, is widely used in tunnel, subway construction, railway construction and dam construction in various municipal projects. When working, the tunnel fan has many characteristics, such as fast air exchange speed between two different spaces in a short time, large air pressure, low energy consumption, good economy, simple and convenient installation and so on.
With the improvement of people's requirements for the use of tunnel fans, the product technology of tunnel fans has been significantly improved in recent years. Many domestic fan manufacturers have the strength to independently develop and produce tunnel fans, and the relevant technologies are no longer heavily dependent on imports. From the initial stage of the development of tunnel fans to modern times, the development of tunnel fans has experienced a qualitative leap.
Key points of product selection of tunnel fan
At present, there are many categories of tunnel fan products, and there is also a large price difference. The selection of tunnel fan follows the following points.
1： Air volume
The air volume requirements of tunnel fan are naturally different due to different use environment and use requirements. For general tunnels, conventional tunnel fans can meet relevant requirements. For some particularly long tunnels, in some use scenarios with high humidity and small air pressure difference between the outside and the tunnel, the air volume of the fan should be larger and the working efficiency of the motor should be higher.
2： Component composition
Tunnel fans have different products according to different uses. For the gas with humid and corrosive environment, the anti-corrosion tunnel fan can be selected in the field of tunnel fan, and the impeller with good anti-corrosion performance can be selected. In case of special gas use environment, it is necessary to contact the manufacturer of tunnel fan for special product customization.
3： Service life
In the process of tunnel construction, the use time is relatively short. After the tunnel construction is completed, the tunnel fan must be replaced. If this is the case, the tunnel fan with short expected service life can be selected. According to the different design years, the tunnel fan can be divided into many kinds. Users refer to the service life of tunnel fan, mainly to control the purchase cost of tunnel fan.
4： Space selection
In the relatively hidden space, the air circulation performance is very poor, so the air volume and transmission efficiency should be considered. The relative space is relatively narrow, so the performance of tunnel fan does not need to be considered.
5： Installation location
Generally, the tunnel fan is installed on the side that does not affect the traffic. The installation position of the tunnel fan is different, the shell style of the tunnel fan will be different, and the orientation selection of its shell air outlet and air inlet should also be different.
