Patent ID: 6488467
Filing Date: 2002-12-03
Classification: F04D,Y10S

Abstract:
A compression system comprising at least one centrifugal compressor, said centrifugal compressor further comprising:an impeller further comprising a plurality of blades having an outer edge and extending from adjacent a center thereof, said impeller supported on an impeller shaft; a compressor housing comprising an inlet in general axial alignment with said center, said inlet having an inside surface generally conforming to said outer edge of said blades to define a clearance there-between, said clearance, in the direction of fluid flow, extending originally axially in general alignment with said shaft and then curving for a substantially radial orientation with respect to said impeller shaft; said axial portion of said clearance comprising a distance smaller than 0.024 inches, said clearance achieved solely by producing and machining said housing; a gearbox housing component; and said compressor housing comprises a volute type scroll integrally cast with said gearbox housing component.