Engine exhaust reverse flow prevention
US12326092B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2023 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | May 16, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/42
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An aircraft engine has an exhaust duct receiving an engine gas flow and a heat exchanger duct having a wall extending from an inlet receiving a cooling air flow to an outlet connected to the exhaust duct. A heat exchanger is disposed in the heat exchanger duct between the inlet and outlet. A diverted airflow pathway in the heat exchanger duct includes first and second plates extending inwardly in the heat exchanger duct from first and second positions on an inner surface of the wall to plate distal ends, the plate distal ends extending past one another in a direction transverse to the wall. A valve in the wall selectively fluidly connects the heat exchanger duct to an evacuation location and is movable between closed and open positions during operating and shutdown conditions of the engine to fluidly disconnect and connect the heat exchanger duct to the evacuation location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.