Impeller for a turbomachine and method for attaching a shroud to an impeller
OwnerIacopo Giovannetti, Massimo Giannozzi +4inventors
InventorsIacopo Giovannetti, Massimo Giannozzi, Dino Bianchi, Leonardo Tognarelli, Manuele Bigi, Andrea Massini
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Abstract
An impeller for a turbo-machine is provided. The impeller includes a metallic base having a back surface and a front surface opposite to the back surface; at least one blade extending on the front surface of the metallic base; a composite shroud attached to the at least one blade such that plural closed paths are formed by the front surface of the metallic base, the at least one blade and the composite shroud; and a connector configured to attach the composite shroud to the metallic base or the at least one blade.
Claims40
An impeller for a turbo-machine, the impeller comprising:
- a metallic base having a back surface and a front surface opposite to the back surface;
- at least one blade extending on the front surface of the metallic base;
- a composite shroud attached to the at least one blade such that plural closed paths are formed by the front surface of the metallic base, the at least one blade and the composite shroud;
- and
- a connector configured to attach the composite shroud to the metallic base or the at least one blade.
A method for attaching a composite shroud to an open or closed metallic impeller for a turbo-machine, wherein the impeller comprises a metallic base having a back surface, a front surface opposite to the back surface, and at least one blade extending on the front surface of the metallic base, the method comprising:
- contacting the composite shroud with the at least one blade such that plural closed paths are formed by the front surface of the metallic base, the at least one blade and the composite shroud;
- and
- fixing the composite shroud to the metallic base and/or the at least one blade using a connector.
Dependencies are inferred from the claim text.