Patent ID: 8899246

Claim:
A device for processing wafer-shaped articles, comprising: a chuck adapted to receive a wafer shaped article; a collector surrounding said chuck, said collector comprising a base and a plurality of divider walls; said collector further comprising a plurality of liquid drainage channels communicating with liquid drainage conduits mounted exteriorly of said collector; said collector further comprising a plurality of nested partitions surrounding said chuck, each of said plurality of nested partitions being positioned on a corresponding one of said plurality of divider walls, and each of said plurality of nested partitions being vertically movable so as to define a plurality of separate process regions within said collector depending on a vertical position of each of said plurality of nested partitions; wherein at least one of said divider walls comprises an internal exhaust conduit communicating with an exhaust duct underlying said divider wall wherein said internal exhaust conduit opens on a lateral surface of at least one of said divider walls.