Patent attributes
The invention relates to a device (1) for the additive production of three-dimensional objects (2) by successive, layered, selective exposure and accompanying successive, layered, selective solidification of construction material layers of a construction material (3) that can be solidified by means of an energy beam (4), comprising a flow device (11), which is designed to form a first fluid flow (FS1) that flows, particularly in a circuit-like manner, along at least one functional component of the device (1), wherein the first fluid flow (FS1) is laden with contaminants, particularly particulate contaminants, which are process-created, wherein the flow device (11) is designed to form a second fluid flow (FS2), wherein the second fluid flow (FS2) flows between the first fluid flow (FS1) and the at least one functional component of the device (1), directly along the surface of the at least one functional component of the device (1).
