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US 11,982,208 B2Granted
Two-piece impeller made of multiple materials
AssigneeHamilton Sundstrand Corporation
InventorsViktor Kilchyk, Brent J. Merritt
Life of this patent
Estimating the term…
Abstract
An impeller includes a metallic inducer portion and a polymeric exducer portion connected to the metallic inducer portion. The metallic inducer portion includes an inducer hub, inducer blades attached to the inducer hub, and an inducer coupling on an end of the inducer hub. The polymeric exducer portion includes an exducer hub, exducer blades attached to the exducer hub, and an exducer coupling on an end of the exducer hub. The exducer coupling connects to the inducer coupling.
Claims17
An impeller comprising:
- a metallic inducer portion comprising:
- an inducer hub having an open end;
- an inducer bore through the inducer hub;
- inducer blades attached to the inducer hub;
- an inducer coupling on an end of the inducer hub opposite the open end of the inducer hub;
- and
- channels extending through the inducer blades and the inducer hub, wherein the channels fluidly connect channel inlets in tips of the inducer blades with the inducer bore;
- and
- a polymeric exducer portion connected to the metallic inducer portion, the polymeric exducer portion comprising:
- an exducer hub;
- exducer blades attached to the exducer hub;
- and
- an exducer coupling on an end of the exducer hub;
- wherein the exducer coupling connects to the inducer coupling;
- and
- wherein a polymer for the polymeric exducer portion is chosen from the group consisting of para-aramid fiber, aramid fiber, and combinations thereof.
13 more elements
A rotary machine comprising:
- a compressor section comprising:
- a compressor housing with a compressor inlet and a compressor outlet;
- a compressor duct connecting the compressor inlet and the compressor outlet;
- and
- a compressor impeller in the compressor duct;
- a first turbine section comprising:
- a first turbine housing with a first turbine inlet and a first turbine outlet;
- a first turbine duct connecting the first turbine inlet and the first turbine outlet;
- and
- a first turbine impeller in the first turbine duct, the first turbine impeller comprising:
- a first metallic inducer portion comprising:
- a first inducer hub having an open end;
- an inducer bore through the inducer hub;
- first inducer blades attached to the first inducer hub;
- a first inducer coupling on an end of the inducer hub opposite the open end of the inducer hub;
- and
- channels extending through the first inducer blades and the inducer hub, wherein the channels fluidly connect channel inlets in tips of the first inducer blades with the inducer bore;
- and
- a first polymeric exducer portion connected to the first metallic inducer portion, the first polymeric exducer portion comprising:
- a first exducer hub;
- first exducer blades attached to the first exducer hub;
- and
- a first exducer coupling on an end of the exducer hub;
- wherein the first exducer coupling connects to the first inducer coupling;
- and
- wherein a polymer for the first polymeric exducer portion is chosen from the group consisting of para-aramid fiber, aramid fiber, and combinations thereof;
- and
- a tie rod connecting the compressor impeller and the first turbine impeller.
25 more elements
An impeller for a rotary machine comprising:
- a metallic inducer portion comprising:
- an inducer hub;
- inducer blades attached to the inducer hub
- openings through tips of the inducer blades;
- channels through the inducer blades and the inducer hub, the channels fluidly connecting the openings to bearings of the rotary machine to cool the bearings;
- and
- an inducer coupling on an end of the inducer hub;
- and
- a polymeric exducer portion connected to the metallic inducer portion, the polymeric exducer portion comprising:
- an exducer hub;
- exducer blades attached to the exducer hub;
- and
- an exducer coupling on an end of the exducer hub;
- wherein the exducer coupling connects to the inducer coupling;
- and
- wherein a polymer for the polymeric exducer portion is chosen from the group consisting of para-aramid fiber, aramid fiber, and combinations thereof.
13 more elements
Dependencies are inferred from the claim text.