Regenerative rotodynamic machines

Details Regenerative rotodynamic machines Regenerative rotodynamic machines

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F04D 17/00 (2006.01) F04D 5/00 (2006.01) F04D 23/00 (2006.01) F04D 29/18 (2006.01)

Patent

CA 1132953

ABSTRACT In a regenerative rotodynamic compressor, a portion of a disc-like impeller adjacent the impeller periphery extends radially through an annular chamber in the compressor casing concentric with the impeller, thereby dividing said chamber into two annular side channels, one on each side of the impeller, The portion of the impeller lying in the annular chamber has scooped out annular cavities or recesses in its sides in which are disposed rings of aerodynamic blades, and fluid flow passing around the annular chamber from an inlet to an outlet is caused to circulate repeatedly, flowing radially outward through the blading in the impeller cavities and radially inward in the annular side channels alongside the impeller outside the impeller cavities. Shroud rings at the blade tips form cores around which this circulation takes place. The blades are cast integrally with the impeller disc or with the shroud rings. The aerodynamic blades are designed so that the angle between the entry and exit flows of each blade is greater than 90°.

340834

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