Operating Principle: The unit incorporates a centrifugal impeller (typically backward-inclined or backward-curved), which generates centrifugal force upon rotation to draw in air and discharge it at high velocity.
Structural Design: It is equipped with a rain cover (available in FRP, aluminum alloy, or polyester fiber) and a protective screen, which effectively prevent rain ingress and keep foreign objects from coming into contact with rotating parts.
Material Options: The housing and impeller are generally made of lightweight, corrosion-resistant materials such as galvanized steel, aluminum alloy, or fiberglass-reinforced plastic (FRP), ensuring reliable performance in harsh outdoor environments.