INERTIAL FILTER

摘要

Provided is an inertial filter to be disposed in an air flow path for a stream of air containing nanoparticles to pass through to collect the nanoparticles in the air flow path by utilizing an effect of particle inertia, wherein the nanoparticles having smaller particle size are collected as a flow velocity of the stream of air is higher, and plural particle classifying sheets having plural mesh-like holes are disposed in the air flow path. The plural particle classifying sheets are stacked on each other in a manner that a part of at least one of the particle classifying sheets overlaps with the other particle classifying sheet. The inertial filter can adjust a classification diameter by adjusting a shadow area ratio on a projection view obtained by virtually projecting the plural particle classifying sheets from a downstream side to an upstream side of the air flow path.