HP INCFollow

Abstract

Nowadays, there are several challenges on laptop fan need to overcome from design

perspective, including high flowrate and pressure capability on slim form factor, low

acoustic prominence ratio on high frequency range, and better cost-to-performance

ratio. It’s usually conflictive to achieve high performance while maintain low acoustic

energy concentration on high frequency band. Since traditionally fan is made with single

material, same blade shape and blade-to-blade interval design, energy concentration

on high frequency range is always observed because dense blade number is needed for

performance requirement.

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