CENTRIFUGAL FAN, NECK FAN, AND VORTEX SHELL ASSEMBLY

Abstract: a neck fan is provided and is configured to be worn around a neck of a user. the neck fan includes: a shell, defining a receiving channel; and two centrifugal fans. one of the two centrifugal fans is disposed at an end of the receiving channel, and another one of the two centrifugal fans is disposed at another end of the receiving channel. each of the two centrifugal fans includes: a plurality of blades, configured to rotate to intake air from an outside of the centrifugal fan to generate wind; and a vortex tongue structure, including a pressurizing plate and a wind guiding plate connected to the pressurizing plate. the pressurizing plate is a curved wall arranged around ends of some of the plurality of blades, the wind guiding plate protrudes from and is extending away from an outer surface of the pressurizing plate.

Inventor(s): Jiahang XIE, Guanzheng ZHENG, Xiangfu LI

CPC Classification: F04D25/166 (NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps ; ion pumps ; electrodynamic pumps ))

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