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公开(公告)号：US20210402691A1
公开(公告)日：2021-12-30
申请号：US17354943
申请日：2021-06-22
发明人： Daniel Brück , Zhuo Peng , Naveed Iqbal , Torsten Kuntoff , Hendrik Jargstorf
IPC分类号： B29C64/25 , B29C64/245 , B29C64/264 , B29C64/364 , B29C64/153
摘要： A process chamber housing for an additive manufacturing apparatus comprising a process chamber with a bottom, a ceiling, and sidewalls jointly enclosing a volume of the process chamber, with a gas inlet in a front wall and a gas outlet in a rear wall of the sidewalls. The gas inlet and outlet are positioned at opposite sides of an opening in the bottom and face each other, which allows for an improved removal of smoke out of the process chamber if the gas inlet has a width wi, the opening has a width ws, and the gas outlet has a width w0, such that at least one of the relations (i) wi≥ws±4 cm and w0≥ws±4 cm; (ii) wi≥ws and/or w0≥ws; and (iii) wi≥ws+1 cm and/or w0≥ws+1 cm is satisfied.
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公开(公告)号：US20230405679A1
公开(公告)日：2023-12-21
申请号：US18035220
申请日：2021-10-25
发明人： Vera Gauzer , Daniel Brück , Jonas Prell , Karsten Neumann
摘要： An apparatus (10) for producing a three-dimensional work piece (46) by irradiating layers of a raw material powder with electromagnetic or particle radiation comprises a process chamber (16) accommodating a carrier (12) and a powder application device (14) for applying a layer of raw material powder onto the carrier (12). The apparatus (10) further comprises an irradiation unit (26) for selectively irradiating the layer of raw material powder with electromagnetic or particle radiation in accordance with a geometry of a corresponding layer of the work piece (18) to be produced. An absorption device (50) which is adapted to absorb heat radiation emitted upon selectively irradiating the layer of raw material powder with electromagnetic or particle radiation is provided in the process chamber (16) and/or in the irradiation unit (26) at such a position that it is capable of absorbing radiation occurring in an interior of the process chamber (16) and/or in an interior of the irraditation unit (26).
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公开(公告)号：US11731356B2
公开(公告)日：2023-08-22
申请号：US17354943
申请日：2021-06-22
发明人： Daniel Brück , Zhuo Peng , Naveed Iqbal , Torsten Kuntoff , Hendrik Jargstorf
IPC分类号： B29C64/25 , B29C64/153 , B33Y30/00 , B29C64/264 , B29C64/364 , B29C64/245 , B33Y40/20
CPC分类号： B29C64/25 , B29C64/153 , B29C64/245 , B29C64/264 , B29C64/364 , B33Y30/00 , B33Y40/20
摘要： A process chamber housing for an additive manufacturing apparatus comprising a process chamber with a bottom, a ceiling, and sidewalls jointly enclosing a volume of the process chamber, with a gas inlet in a front wall and a gas outlet in a rear wall of the sidewalls. The gas inlet and outlet are positioned at opposite sides of an opening in the bottom and face each other, which allows for an improved removal of smoke out of the process chamber if the gas inlet has a width wi, the opening has a width ws, and the gas outlet has a width w0, such that at least one of the relations (i) wi≥ws±4 cm and wo≥ws±4 cm; (ii) wi≥ws and/or wo≥ws; and (iii) wi≥ws+1 cm and/or wo≥ws+1 cm is satisfied.
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