METHOD, DEVICE, AND CONTROL UNIT FOR PRODUCING A THREE-DIMENSIONAL OBJECT

摘要

The invention relates to a method for controlling the direction of gas suctioning, which method is performed in a device (1) for producing a three-dimensional object (2) by selectively solidifying construction material (13) layer by layer. The device (1) comprises a coating device (12-14) for applying a layer of the construction material (13) to a construction field in a working plane (10), a solidifying device (20) for selectively solidifying the construction material (13) in the applied layer, and at least two gas nozzles (40), which are arranged at the edge of the construction field. The gas nozzles (40) can be switched to a function for suctioning gas from the device (1) and to a functionless state and are switched in accordance with an operating state of the device (1).