Cooling Fan Manufacturer outlet design

"Cooling Fan Manufacturer" outlet appearance is a seemingly "stupid Meng," the great circle. However, the internal structure of a cavity with a special structure, rather than a simple solid metal box. Can be seen from the sectional view, "dot雷竞技官方 " vent "cavity" portion toward the positive direction of the air is thin, and is completely closed. The opposite direction is thick and wrapped with a metal sheet leaving a narrow "gap" after lap, this "gap" is "the downwind." As the "blade less fan" of the "blade" is the horizontal rotation, "dot雷竞技官方 " installed after the "outlet" completely unable to find outside. Over time, it was the people who know the truth falsely called "blade less fan."