An impeller including a hub body, a shroud surrounding the hub body, and a plurality of impeller blades extending from the hub body to the shroud, wherein the hub body, the shroud, and the plurality of impeller blades are a one-piece structure.
대표청구항▼
1. An impeller, comprising: a hub body, wherein the hub body includes at least one internal void separate from a shaft aperture;a shroud surrounding the hub body;a plurality of impeller blades extending from the hub body to the shroud, wherein the hub body, the shroud, and the plurality of impeller
1. An impeller, comprising: a hub body, wherein the hub body includes at least one internal void separate from a shaft aperture;a shroud surrounding the hub body;a plurality of impeller blades extending from the hub body to the shroud, wherein the hub body, the shroud, and the plurality of impeller blades are a one-piece structure;wherein at least one of the plurality of impeller blades comprises at least one internal void;a rib extending between opposing internal walls of the hub body through the at least one internal void; andwherein the at least one internal void remains devoid of solid material after the one-piece structure is completely formed. 2. The impeller of claim 1, wherein the impeller comprises a plurality of additive layers of material defining the one-piece structure. 3. The impeller of claim 2, wherein the plurality of additive layers of material comprises different layers of different material. 4. The impeller of claim 1, wherein the at least one internal void comprises an annular void that extends circumferentially about an axis of the impeller. 5. The impeller of claim 1, wherein the shroud includes at least one internal void. 6. The impeller of claim 5, wherein the at least one internal void comprises an annular void that extends circumferentially about an axis of the impeller. 7. The impeller of claim 5, wherein the at least one internal void includes a supporting rib, wherein the supporting rib is configured to increase the structural integrity of the impeller. 8. The impeller of claim 1, wherein the at least one internal void extends through a length extending from one distal end toward an opposing distal end of at least one of the plurality of impeller blades. 9. An impeller, comprising: a hub body;a shroud surrounding the hub body;a plurality of impeller blades extending from the hub body to the shroud, wherein the hub body, the shroud, and the plurality of impeller blades are integrated with one another as a one-piece structure; wherein the hub body and/or the shroud, and at least one of the plurality of impeller blades comprises at least one internal void;at least one supporting rib extending through the at least one of the internal void; andwherein the at least one internal void remains within the impeller in a final form. 10. The impeller of claim 9, wherein the impeller comprises a plurality of additive layers of material defining the one-piece structure. 11. The impeller of claim 10, wherein the layers extend axially, radially, circumferentially, or a combination thereof. 12. The impeller of claim 10, wherein the plurality of additive layers of material comprises different layers of different material. 13. A method of manufacturing a one-piece shrouded impeller, comprising: forming a first shape with a first layer of metal particles;adding additional layers of metal particles on top of the first layer of particles;forming shapes with each of the additional layers of metal particles until formation of the one-piece shrouded impeller;wherein forming shapes in the additional layers of metal particles comprises forming one or more internal voids within the one-piece shrouded impeller;forming a rib through one or more of the internal voids; andwherein the one or more internal voids are present in the one-piece shrouded impeller after manufacturing processes are complete. 14. The method of claim 13, comprising removing excess metal particles. 15. The method of claim 13, comprising heat treating the one-piece shrouded impeller after formation. 16. An impeller, comprising: a hub body, wherein the hub body includes at least one internal void separate from a shaft aperture;a shroud surrounding the hub body;a plurality of impeller blades extending from the hub body to the shroud, wherein the hub body, the shroud, and the plurality of impeller blades are a one-piece structure;wherein at least one of the plurality of impeller blades comprises at least one internal void;a rib extending between opposing internal walls of the hub body through the at least one internal void; andwherein the at least one internal void comprises an annular void in the hub that extends circumferentially about an axis of the impeller. 17. An impeller, comprising: a hub body;a shroud surrounding the hub body;a plurality of impeller blades extending from the hub body to the shroud, wherein the hub body, the shroud, and the plurality of impeller blades are integrated with one another as a one-piece structure; wherein the hub body and/or the shroud, and at least one of the plurality of impeller blades comprises at least one internal void;at least one supporting rib extending through the at least one of the internal void; andwherein the at least one internal void comprises an annular void that extends circumferentially about an axis of the impeller. 18. A method of manufacturing a one-piece shrouded impeller comprising: forming a first shape with a first layer of metal particles;adding additional layers of metal particles on top of the first layer of particles;forming shapes with each of the additional layers of metal particles until formation of the one-piece shrouded impeller;wherein forming shapes in the additional layers of metal particles comprises forming one or more internal voids within the one-piece shrouded impeller;forming a rib through one or more of the internal voids; andremoving excess metal particles.
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이 특허에 인용된 특허 (11)
Gravelle ; Homer E., Compressor impeller and method of manufacture.
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