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Method for operating at least one apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a powdered build material (3) which can be consolidated by means of an energy beam (4), whereby waste thermal energy (WTE) is generated during operation of the at least one apparatus (1), characterized in that the waste thermal energy (WTE) is at least partly used for generating electrical or mechanical energy (EE, ME) by means of at least one energy converting device (15) and/or the waste thermal energy (WTE) is at least partly used for operating at least one thermal energy consuming device.

Titel:	METHOD FOR OPERATING AT LEAST ONE APPARATUS FOR ADDITIVELY MANUFACTURING THREE-DIMENSIONAL OBJECTS
Link:	View record in USPTO Patent Applications (Volltext)
Veröffentlichung:	2019
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20190022799 Publication Date: January 24, 2019 Appl. No: 15/939198 Application Filed: March 28, 2018 Assignees: CL SCHUTZRECHTSVERWALTUNGS GMBH (Lichtenfels, DE) Claim: 1. Method for operating at least one apparatus (1) for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a powdered build material (3) which can be consolidated by means of an energy beam (4), whereby waste thermal energy (WTE) is generated during operation of the at least one apparatus (1), characterized in that the waste thermal energy (WTE) is at least partly used for generating electrical or mechanical energy (EE, ME) by means of at least one energy converting device (15) and/or the waste thermal energy (WTE) is at least partly used for operating at least one thermal energy consuming device. Claim: 2. Method according to claim 1, characterized in that the waste thermal energy (WTE) is at least partly converted into electrical energy (EE), which electrical energy (EE) is transferred to at least one electrical energy consuming device internal of the apparatus (1) or to at least one electrical energy consuming device external of the apparatus (1). Claim: 3. Method according to claim 2, characterized in that the electrical energy (EE) is transferred to an electrical energy consuming device internal of the apparatus (1), whereby the electrical energy consuming device internal of the apparatus (1) is a functional unit of the apparatus (1) which serves for applying a layer of build material (3) in a build plane of a process chamber (7) of the apparatus (1), and/or selectively irradiating a build material layer with an energy beam (4), and/or generating a stream of a process gas (10) along a streaming channel (9), and/or generating a driving force for driving at least one driveable functional component, and/or heating at least one component of the apparatus (1). Claim: 4. Method according to claim 2, characterized in that an energy converting device (15) configured for directly or indirectly converting thermal energy into electrical energy (EE) is used for converting the waste thermal energy (WTE) into electrical energy (EE). Claim: 5. Method according to claim 1, characterized in that the waste thermal energy (WTE) is at least partly converted into mechanical energy (ME), which mechanical energy (ME) is transferred to at least one mechanical energy consuming device internal of the apparatus (1) or to at least one mechanical energy consuming device external of the apparatus (1). Claim: 6. Method according to claim 5, characterized in that the mechanical energy (ME) is transferred to an mechanical energy consuming device internal of the apparatus (1), whereby the mechanical energy consuming device internal of the apparatus (1) is a functional unit of the apparatus (1) which serves for applying a layer of build material (3) in a build plane of a process chamber (7) of the apparatus (1), and/or selectively irradiating a build material layer with an energy beam (4), and/or generating a stream of a process gas (10) along a streaming channel (9), and/or generating a driving force for driving at least one driveable functional component of the apparatus (1). Claim: 7. Method according to claim 5, characterized in that an energy converting device (15) configured for directly or indirectly converting thermal energy into mechanical energy (ME) is used for converting the waste thermal energy (WTE) into mechanical energy (ME). Claim: 8. Method according to claim 1, characterized in that the waste thermal energy is at least partly used for operating at least one thermal energy consuming device, whereby the waste thermal energy is at least partly transferred to at least one thermal energy consuming device internal of the apparatus or at least one thermal energy consuming device external of the apparatus. Claim: 9. Method according to claim 8, characterized in that the waste thermal energy is at least partly transferred to at least one thermal energy consuming device internal of the apparatus, whereby the thermal energy consuming device internal of the apparatus is a functional unit of the apparatus which serves for heating of at least one functional component of the apparatus, in particular for heating of a container-like powder module of the apparatus, the container-like powder module comprising a powder chamber for receiving powder-like build material, or for heating of a process chamber of the apparatus. Claim: 10. Method according to claim 1, characterized in that the waste thermal energy is taken from an energy beam used for selectively irradiating build material layers during operation of the apparatus, at least partly reflected energy irradiation generated during operation of the apparatus, wall portions of the apparatus heated during operation of the apparatus, e.g. heated walls of container-like powder modules or heated walls of a process chamber, heated streaming channel walls defining an inner streaming volume through which a process gas may stream during operation of the apparatus. Claim: 11. Method according to claim 1, characterized in that the waste thermal energy is transferred to the at least one energy converting means and/or to the at least one thermal energy consuming device by means of at least one thermal energy carrier medium. Claim: 12. Method according to claim 1, characterized in that the converted electrical and/or mechanical energy and/or the thermal waste energy is temporarily stored. Claim: 13. Apparatus for additively manufacturing of three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4), characterized in that the apparatus is configured for performing the method according to claim 1. Claim: 14. Plant for additively manufacturing of three-dimensional objects, comprising a plurality of apparatuses for additively manufacturing of three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4), characterized in that at least one apparatus is configured for performing the method according to claim 1. Current International Class: 23; 33; 33; 33; 23

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METHOD FOR OPERATING AT LEAST ONE APPARATUS FOR ADDITIVELY MANUFACTURING THREE-DIMENSIONAL OBJECTS