Patent ID: 8114203

Claim:
A substrate treatment apparatus, comprising: a process chamber in which a process is performed; an exhaust conduit connected to the process chamber to exhaust a process gas in the process chamber; and a collection unit installed in and extending from the exhaust conduit to collect particles in the process gas which flows through the exhaust conduit, wherein the collection unit comprises: a trap installed in the exhaust conduit, the trap having an inlet through which the particles are introduced and an outlet through which the particles are vented out; a collection line connected to the outlet of the trap, the collection line penetrating a portion of the exhaust conduit to extend toward an outside region of the exhaust conduit to a storage chamber; and a plurality of acoustic wave generators installed onto an outer wall of the exhaust conduit, wherein the acoustic wave generators produce acoustic waves which travel toward an inside region of the exhaust conduit.