Combustor with a dilution passage

The combustor design with a movable baffle system addresses the challenges of managing high-velocity hydrogen flames and reducing NOx emissions in gas turbine engines, achieving efficient and uniform combustion.

EP4435325B1Active Publication Date: 2025-06-18GENERAL ELECTRIC CO
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Patent Information

Application Number
EP2024162798
Authority / Receiving Office
EP · EP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2023-03-20
Filing Date
2024-03-11
Publication Date
2025-06-18
Estimated Expiration
2044-03-11

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Abstract

A combustor (80) having a casing (78), an inner liner, an outer liner (82b), a compressed air passageway (88), a combustion chamber (86) and at least one dilution passage (120). The compressed air passageway (88) being formed between the casing (78), the inner liner (82a) and the outer liner (82b). The combustion chamber (86) being at least partially defined by the inner liner (82a) and the outer liner (82b). The at least one dilution passage (120) extending through at least one of the inner liner (82a) or the outer liner (82b). The at least one dilution passage (120) extending between an inlet (126) fluidly coupled to the compressed air passageway (88) and a dilution hole (122) fluidly coupled to the combustion chamber (86). A baffle (130) is provided within the compressed air passageway (88), the baffle (130) having a range of movement between a first position and a second position relative to the inlet (126) of the at least one dilution passage (120) to control a degree of occlusion of compressed airflow (C) to the inlet (126).
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Citation Information

Patent Citations

  • Gas turbine combustion chamber

    EP0088933A1