Eos Gmbh Electro Optical Systems

Franz-Josef Kerl

Alexander Schilling

Sebastian Mehl

A flow device serves for a 3D printer. The device includes a gas conveying device for generating a gas stream and a process chamber with a build area for building the object. The process chamber includes a first gas inlet for introducing a gas stream into the process chamber, and a first gas outlet and a second gas outlet for discharging the gas stream. The first gas outlet is arranged closer to the build area than the second gas outlet in a direction perpendicular to the build area, and the first gas outlet is provided substantially within a lower third of a distance of the build area from a process chamber ceiling a first height range of the process chamber with respect to its extension in a direction perpendicular to the build area and the second gas outlet is provided substantially within the upper four fifths of the distance of the build area from the process chamber ceiling.

Device and method for generatively producing a three-dimensional object

Disclosed is a flow device for an additive manufacturing device. The device includes a gas supply line located outside the process chamber to conduct gas to a gas inlet. The gas supply line includes a first line section extending in a first extension direction and a maximum width that extends transverse to the first extension direction and parallel to the build area. A length of the first line section is at least half as large as the maximum value of the width. The first line section also includes a first subsection spaced from the gas inlet and including a first flow conditioning unit and a wall of the first line section. The first flow conditioning unit substantially aligns the gas stream in the first extension direction.

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Kumhausen, Germany

Franz-Josef Kerl