Annular gas turbine combustor

US8028528B2 · kind B2 · utility

Assignee

• UNITED TECHNOLOGIES CORPORATION · US

Inventors

• Steven W. Burd · Cheshire, US
• William A. Sowa · Simsbury, US
• Albert K. Cheung · East Hampton, US
• Stephen K. Kramer · Cromwell, US
• Reid Dyer Curtis Smith · Amston, US
• James B. Hoke · Tolland, US

Key dates

• Filing date: Oct 17, 2005
• Grant date: Oct 4, 2011
• Expiry date: Dec 21, 2027

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23R3/50
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A combustor assembly includes a convergent segment followed by a divergent segment to advantageously improve combustion. The combustor assembly includes a first segment beginning at a forward end that transitions to a second segment past a transition segment in a direction along a combustor axis toward an aft end. The reduction in cross-sectional area within the first segment provides desirable fuel and air mixing properties. The convergent first segment in combination with the divergent second segment decreases residence time of fuel-air mixture within the combustor chamber that decreases production of undesirable emissions from the combustor assembly.