Frameless DC fan is the fluid that frameless DC fan through the fan impeller twice, the fluid flows in the radial direction and then frameless DC fan out in the radial direction.

A cross-flow fan is a fluid that cross-flow fan through the fan impeller twice, the fluid flows in the radial direction and then flows out in the radial direction. The intake and exhaust directions are in the same plane

Un ventilador de flujo cruzado es un fluido que el ventilador de flujo cruzado a través del impulsor del ventilador dos veces, el fluido fluye en la dirección radial y luego fluye en la dirección radial. Las direcciones de admisión y escape están en el mismo plano

A cross-flow fan is a fluid that cross-flow fan through the fan impeller twice, the fluid flows in the radial direction and then flows out in the radial direction. The intake and exhaust directions are in the same plane