SUPPORT STRUCTURE AND METHODS FOR ADDITIVELY MANUFACTURING IMPELLERS

A shrouded impeller (100) and a method (300, 400) of additively manufacturing the same are provided. In one example aspect, the shrouded impeller (100) includes a hub (110) and a shroud (112) spaced from the hub (110). The shrouded impeller (100) also includes a plurality of vanes (114) extending be...

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Bibliographische Detailangaben
Hauptverfasser:	NOTARNICOLA, Michael Robert, BRYANT, Christopher Michael, WAYMEYER, Stephen Joseph
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING CASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES NON-POSITIVE DISPLACEMENT PUMPS PERFORMING OPERATIONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS POWDER METALLURGY PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STEAM ENGINES TRANSPORTING WEAPONS WORKING METALLIC POWDER WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A shrouded impeller (100) and a method (300, 400) of additively manufacturing the same are provided. In one example aspect, the shrouded impeller (100) includes a hub (110) and a shroud (112) spaced from the hub (110). The shrouded impeller (100) also includes a plurality of vanes (114) extending between and connecting the hub (110) and the shroud (112). The vanes (114) are spaced circumferentially apart from one another. Flow passages (116) are defined between adjacent vanes (114). In some implementations, the shrouded impeller (100) is additively manufactured. During printing, one or more support structures (160) are formed within and fill a portion of one or more of the flow passages (116) to support the unsupported walls of the shrouded impeller (100), e.g., the shroud (112). Further, the support structures (160) are removable from the shrouded impeller (100), e.g., after the shrouded impeller (100) has been printed. L'invention concerne une roue à aubes carénée (100) et un procédé (300) de fabrication additive de celle-ci. Dans un aspect donné à titre d'exemple, la roue à aubes carénée (100) comprend un moyeu (110) et un carénage (112) espacé du moyeu (110). La roue à aubes carénée (100) comprend également une pluralité d'aubes (114) s'étendant entre le moyeu (110) et le carénage (112) et reliant le moyeu et le carénage. Les aubes (114) sont espacées de manière circonférentielle les unes des autres. Des passages d'écoulement (116) sont définis entre des aubes adjacentes (114). Dans certains modes de réalisation, la roue à aubes carénée (100) est fabriquée de manière additive. Pendant l'impression, au moins une structure de support (160) est formée à l'intérieur et remplit une partie d'au moins un passage d'écoulement (116) pour supporter les parois non supportées de la roue à aubes carénée (100), par exemple, le carénage (112). En outre, ces structures de support (160) peuvent être retirées de la roue à aubes carénée (100), par exemple, après que la roue à aubes carénée (100) a été imprimée.