US 11,788,726 B2
Varying dilution hole design for combustor liners
Rimple Rangrej, Bengaluru (IN); Saket Singh, Bengaluru (IN); Pradeep Naik, Bengaluru (IN); and Ajoy Patra, Bengaluru (IN)
Assigned to GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Mar. 3, 2022, as Appl. No. 17/653,399.
Claims priority of application No. 202111056418 (IN), filed on Dec. 6, 2021.
Prior Publication US 2023/0175695 A1, Jun. 8, 2023
Int. Cl. F23R 3/06 (2006.01)
CPC F23R 3/06 (2013.01) 19 Claims
OG exemplary drawing
 
1. A combustor for a turbomachine engine, the combustor comprising:
a combustion chamber;
a liner forming a boundary of the combustion chamber; and
a plurality of dilution holes through the liner to permit airflow into the combustion chamber,
wherein each dilution hole in the plurality of dilution holes has an intake aperture on a cold surface of the liner outside the combustion chamber, and an exit aperture on a hot surface of the liner inside the combustion chamber, and
wherein the plurality of dilution holes comprises converging dilution holes and diverging dilution holes, the converging dilution holes having a converging cross-sectional profile that is wider on the cold surface of the liner and narrower on the hot surface of the liner, and the diverging dilution holes having a diverging cross-sectional profile that is wider on the hot surface of the liner and narrower on the cold surface of the liner.