Tunnel jet fan

Jet fan (tunnel fan) is a special type of axial fan mainly used in longitudinal ventilation systems of tunnels such as highways, railways, and subways. Jet fans (tunnel fans) are generally suspended at the top or on both sides of the tunnel, do not occupy traffic area, do not require additional air ducts, and have low civil construction costs; Fans are easy to install, operate and maintain, and are an economical way of ventilation. When a jet fan (tunnel fan) is in operation, a portion of the air inside the tunnel is sucked in from one end of the fan, accelerated by the impeller, and then ejected at high speed from the other end of the fan. This high-speed airflow with high kinetic energy transfers energy to other gases inside the tunnel, generating a pressure rise that overcomes tunnel resistance, thereby pushing the air inside the tunnel to flow in the direction of the downwind jet. When the flow velocity decays to a certain extent, the next set of fans continues to operate. In this way, the purpose of inhaling fresh air from one end of the tunnel and expelling polluted air from the other end is achieved. Tunnel fan is an air exchange device designed specifically for longitudinal ventilation and air exchange systems in highway, railway, and subway tunnels. It is designed for smoke control in emergency situations and can also be used for ventilation and air exchange in construction sites such as tunnels and auxiliary tunnels. It is suitable for operation at an altitude of 3500 meters. When working continuously in an environment of -25~50 ℃, in the event of a fire, it is allowed to work for no more than one hour in a short period of time at 250-280 ℃.

Product advantages:
1. No need to connect pipes, easy installation, able to freely change the direction of airflow, relying on relay transmission and induction of air,

2. Using soundproof materials to reduce the noise of the fan, it has high efficiency, low noise, and stable operation.