Patent ID: 8540496
Filing Date: 2013-09-24
Classification: F04D

Abstract:
1. A fan apparatus comprising: a housing having a hollow tubular shape; a circuit board holding structure centrally disposed inside the housing and comprising axially extending slits for communicating an interior of the circuit board holding structure with an exterior of the circuit board holding structure; a plurality of fixed blades disposed between the housing and the circuit board holding structure, the plurality of fixed blades being fixed to the housing and the circuit board holding structure for guiding air through the slits; a motor comprising a rotary shaft, a stator and an impeller having a plurality of rotary blades, the motor being disposed at a front end of the circuit board holding structure; a circuit board with electronic parts mounted thereon is disposed in the interior of the circuit board holding structure, wherein a surface of the circuit board with the electronic parts mounted thereon is arranged in parallel with an axial direction of the motor; and a cover and locking claws disposed at a rear end of the circuit board holding structure, wherein the cover is engagingly secured by the locking claws to the rear end of the circuit board holding structure wherein a plurality of vent holes are provided on the cover attached to the end of the circuit board holding structure.