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US 9,541,003 B2Granted
Air particle separator
AssigneeROLLS-ROYCE plc
InventorRobert T. Duge
Life of this patent
Estimating the term…
Abstract
A gas turbine engine is disclosed having a particle separator and an ejector disposed downstream of the particle separator and structured to entrain a dirty flow from the separator. A container of working fluid can be placed in flow communication with the ejector to provide an ejector flow to entrain the dirty flow from the particle separator. Alternatively and/or additionally, the ejector can be configured to use a flow of working fluid from the gas turbine engine as an ejector flow.
Claims20
An apparatus comprising:
- a gas turbine engine having an inlet structured to capture an inlet flow stream and deliver it to rotating turbomachinery components of the gas turbine engine;
- a particle separator having a dirty flow path and a clean flow path, the dirty flow path oriented to withdraw particles from the inlet flow stream, the clean flow path in flow communication with the rotating turbomachinery components;
- a pressure source separate from the rotating turbomachinery components of the gas turbine engine and capable of producing a flow of pressurized fluid, the pressure source in flow communication with a conduit;
- and
- an ejector structured to receive the conduit and the dirty flow path, wherein the pressurized fluid flowing in the conduit is entrained with a dirty flow conveyed in the dirty flow path.
2 more elements
An apparatus comprising:
- a gas turbine engine having turbomachinery rotatable about a shaft axis and operable to produce a gas turbine engine flow, the gas turbine engine including a starting state and an operating state;
- a particle separator having a dirty flow path and a clean flow path, the dirty flow path structured to convey a dirty flow away from the gas turbine engine and the clean flow path structured to convey a clean flow to the turbomachinery of the gas turbine engine;
- and
- an ejector having a first flow path and a second flow path, the first flow path structured to receive the dirty flow of the particle separator, the second flow path structured to convey a working fluid to be entrained with the dirty flow path by ejector action, and the second flow path structured to receive a first source working fluid from a first source during the starting of the gas turbine engine and structured to receive a second source working fluid from a second source during the operating state.
1 more element
An apparatus comprising:
- a gas turbine engine having turbomachinery components and an engine air particle separator for separating matter from an inlet air flow to create a dirty flow path and a clean flow path, the clean flow path structured to deliver a clean flow to be used with the turbomachinery components, the dirty flow path conveying a dirty flow;
- and
- means for entraining the dirty flow with a source flow from an engine start air source, the source flow independent of the clean flow.
A method comprising:
- starting a gas turbine engine including accelerating a rotatable compressor;
- activating a flow source apart from the rotatable compressor of the gas turbine engine to provide an ejector flow;
- forming a clean flow and a dirty flow downstream of an inlet of the gas turbine engine;
- routing the clean flow to the accelerating compressor;
- and
- entraining the dirty flow with the ejector flow.
3 more elements
Dependencies are inferred from the claim text.