Direct injection multipoint nozzle

US9810186B2 · kind B2 · utility

Assignee

• Parker-Hannifin Corporation · US

Inventors

• Adel Mansour · Mentor, US
• Michael K. Teter · London, US
• Erlendur Steinthorsson · Westlake, US
• Brian P. Hollon · Moncks Corner, US
• Jeffery R. Lehtinen · Powell, US
• Raman Ras · Painesville, US

Key dates

• Filing date: Dec 31, 2013
• Grant date: Nov 7, 2017
• Expiry date: Apr 4, 2034

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23D2900/11002
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Provided is an injector (30) having a plurality of injector modules (44) that include a spray cup having a chamber and a plurality of radial air passages for directing air radially into the chamber, and a pressure swirl atomizer attached to the spray cup and having a fluid passage for directing fluid axially into chamber and an air passage for directing air axially into the chamber. By providing radial and axial air flow and axial fuel flow into the chamber, the fuel may be mixed to prevent local hot spots that lead to high NOx emissions, and a stable flame may be maintained without autoignition and flashback. The axial air flow also prevents recirculation zones from forming at a base of the spray cup, provides improved atomization and enhanced combustion.