COAXIAL FUEL INJECTOR

• Main Authors: ISHIGAMORI ISAO, NAKAMURA YUJI, TAKAKUSAKI TSUNEHIKO, HASHIMOTO TAKASHI
• Format: Patent
• Language: English
• Published: 30.01.1996
• Edition: 6
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; BURNERS; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; GAS-TURBINE PLANTS; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

PURPOSE:To enable easy adjustment of turning intensity with a simple structure and stable gas combustion by axially providing a plurality of nozzles for injecting the gas on a circumferential certain position of a gas flow passage having a tapered portion. CONSTITUTION:A coaxial fuel injector 1 is mainly composed of a cylindrical inner injector 2 which injects oxidizer gas, for instance, from its leading end to a combustion chamber 7, and a cylindrical outer injector 3 which coaxially surrounds the inner injector 2, and injects fuel gas to the combustion chamber 7. Turning intensity of the gas passing an outer gas turning nozzle 6 is determined by a diameter of an installation position of the outer gas turning nozzle 6 in the outer injector 3. Gas injecting nozzles 6, 16 are formed on a plurality of positions of a tapered portion which is narrowed toward an axial injection port of an inner peripherall surface of the outer injector 3. The gas turning intensity is adjusted by varying the positions of the nozzle from which the gas is injected. Turning intensity is easily adjusted with a simple structure.