system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do Dyson air fans work and why do they use a ring-shape structure? How are they better than a normal air fan?
gpt
that there is still a fan in the base. Being in the base, in a housing, it is a fucted fan ans is more efficient because air isnt lost around the blade tips. From there, the air goes into the ring manifold and escapes through a slit inside the ring. This high velocity air lowers the pressure inside the ring and draws more air from the leading area, increasing air volume.

Advantages : more efficient fan, fan case makes it quiet, laminar flow travels farther across the room.