Patent ID: 8353986

Claim:
A substrate processing apparatus, comprising: a processing unit in which a specific type of processing is executed on a substrate; and a transfer unit through which the substrate is carried into/out of said processing unit, wherein said transfer unit includes: a transfer chamber that is used when the substrate is carried into/out of said processing unit; a transfer mechanism disposed in the transfer chamber, that transfers the substrate; a plurality of air intake fans disposed at an upper space inside said transfer chamber, that draws external air into said transfer chamber through a plurality of air intake ports; at least one air intake filter unit disposed below said air intake fans so as to cover said air intake fans, the at least one air intake filter unit constituting an amine component eliminating filter through which the external air is drawn into said transfer chamber through said air intake ports to first eliminate at least an amine component contained in the external air; a discharge unit disposed below said transfer chamber so as to face opposite said plurality of air intake fans and having a plurality of discharge ports through which an atmosphere within said transfer chamber is discharged; at least one discharge gas filter unit disposed within the transfer chamber so as to cover said plurality of discharge ports and to face opposite the at least one air intake filter unit, the at least one discharge gas filter unit constituting a harmful constituent eliminating filter through which a discharge gas is discharged to a space outside said transfer chamber through said plurality of discharge ports to first eliminate at least a harmful constituent present in the discharge gas; and a plurality of discharge fans each mounted at one of said discharge ports at said transfer chamber so as to face opposite the plurality of air intake fans and creating a down flow that is a discharge flow within said transfer chamber directed from said plurality of air intake fans toward said discharge unit, said at least one discharge gas filter unit has a plurality of wave-like constituents disposed such that a side surface of each individual constituent is along a direction of said down flow and disposed separately from said plurality of discharge fans, said at least one discharge gas filter unit eliminates the harmful constituent as the discharge gas passes through among said plurality of wave-like constituents, and the plurality of discharge fans face opposite the plurality of air intake fans so that the discharge flow flowing, between the at least one air intake filter unit and the at least one discharge gas filter unit, from the plurality of air intake fans toward the discharge unit is adjusted to achieve linearity to prevent particles from being lifted upward.