Patent ID: 11920614
Assignee: HUI YING
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 7:
8. The fan according to any item of claim 5, wherein, a first sunken air-guiding step extends from the first guiding slope to the first air outlet, wherein the first sunken air-guiding step is formed such that the closer the first sunken air-guiding step gets to the first air outlet, the larger a sunken distance of the first sunken air-guiding step becomes;
a second sunken air-guiding step extends from the second guiding slope to the second air outlet, wherein the second sunken air-guiding step is formed such that the closer the second sunken air-guiding step gets to the second air outlet, the larger a sunken distance of the second sunken air-guiding step becomes.