Coupling a fuel nozzle purge flow directly to a swirler

US12038176B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Pradeep Naik · Kanchinakote, IN
• Shai Birmaher · Cincinnati, US
• Kwanwoo Kim · Montgomery, US
• Saket Singh · Bengaluru, IN
• Perumallu Vukanti · Bengaluru, IN
• Karthikeyan Sampath · Bengaluru, IN
• Steven C. Vise · Loveland, US
• Nicholas R. Overman · Sharonville, US
• Michael A. Benjamin · Cincinnati, US

Key dates

• Filing date: Feb 18, 2022
• Grant date: Jul 16, 2024
• Expiry date: Jul 30, 2042

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23D11/383
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A swirler assembly includes a swirler having a primary swirler with a primary swirler venturi, a swirler ferrule plate connected upstream to the primary swirler, and a fuel nozzle disposed in the swirler ferrule plate. The swirler ferrule plate has an annular pressure drop cavity with oxidizer inlet orifices in fluid communication with the swirler, and at least one outlet orifice in fluid communication with the primary swirler venturi. A second flow of oxidizer to the swirler incurs a first pressure drop, a third flow of the oxidizer from the swirler to the annular pressure drop cavity incurs a second pressure drop, and a fourth flow of the oxidizer from the annular pressure drop cavity to the primary swirler venturi incurs a third pressure drop.