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US 4,053,261 AGranted
Impeller for a high-speed turbomachine
AssigneeMTU Motoren-und Turbinen-Union Munchen GmbH
InventorGregor Pennig
Life of this patent
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Abstract
An impeller for a high-speed turbomachine, in which the impeller includes a hub which is frictionally fastened on a shaft of the machine by a tapered fit. A resilient, axially extending connecting portion of the hub is interposed between the impeller and hub and is welded to the impeller. The impeller encompasses the shaft and the hub so as to form a narrow radial gap therebetween.
Claims6
In an impeller wheel for a high-speed turbomachine having a shaft;
- and a hub frictionally fastened on said shaft through a tapered fit therebetween;
- the improvement comprising the combination of:
- a. said impeller wheel being a centrifugal radially-shaped impeller having a predetermined width;
- b. said hub being an elongate cylindrical sleeve extending into said impeller wheel in an axial direction;
- c. said impeller wheel encompassing said shaft and said hub so as to form a narrow radial gap therebetween;
- and
- d. said hub at the axial end thereof remote from said impeller wheel including a thin-walled, cylindrical connecting part extending radially outwardly and being welded at its free end to said impeller wheel, said hub being an elongated cylindrical sleeve extending partly into a central bore of said impeller wheel in an axial direction.
4 more elements
Dependencies are inferred from the claim text.