Impeller baffle with air cavity deswirlers
AssigneePratt & Whitney Canada Corp.
InventorsPierre-Yves Legare, Jason Todd Herborth, Glen Owen Arthur
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Abstract
A gas turbine engine includes a high-pressure compressor having an impeller and an impeller baffle having a generally annular body, the impeller baffle spaced apart from a back face of an impeller to create an airspace therebetween, the airspace communicating between an impeller exit and an apparatus to be pressurized, the impeller baffle including a plurality of generally radially-disposed ribs extending into the airspace for diminishing the velocity of air swirling in the airspace.
Claims12
A gas turbine engine comprising:
- a high-pressure compressor having an impeller;
- and
- an impeller baffle having a generally annular body, the impeller baffle spaced apart from a back face of an impeller to create an airspace therebetween, the airspace communicating between an impeller exit and an apparatus to be pressurized, the impeller baffle including a plurality of generally radially-disposed ribs extending into the airspace for diminishing the velocity of air swirling in the airspace, and further including a plurality of air slots disposed on a rear face of the impeller baffle for further reducing air swirl.
An impeller baffle for deswirling air downstream of an impeller in a gas turbine engine, the impeller baffle comprising:
- a generally annular body;
- a plurality of ribs formed on a front face of the annular body of the baffle, the ribs adapted to deswirl the air behind an impeller backface;
- and
- a plurality of air slots disposed on a rear face of the impeller baffle for further curtailing air swirl and thus further increasing air pressure.
Dependencies are inferred from the claim text.