Patent ID: 6533954
Filing Date: 2003-03-18
Classification: F23D,F23R

Abstract:
A method of forming an injector assembly, comprising the steps of:etching a fuel swirl chamber in a first thin plate of etchable material, said fuel swirl chamber having a shape such that fluid to be sprayed can move therein in a vortex motion toward the center of the fuel swirl chamber; and etching a spray orifice which extends through the thin section of material at the center of the fuel swirl chamber such that fluid to be sprayed can move from said fuel swirl chamber to said spray orifice and then exit the spray orifice in a conically-shaped spray; and providing at least one fuel feed slot in fluid communication with the fuel swirl chamber and which extends non-radially to said fuel swirl chamber for supplying fuel to be sprayed through the injector assembly; and etching a cylindrical air swirler passage in a second thin plate of etchable material, and locating the second plate in adjacent relation to the second side of the first plate such that the cylindrical air swirler passage is located in co-axial relation to the spray orifice of the fuel swirler passage such that fuel directed through the spray orifice passes through the air swirl passage and swirling air can be imparted to the fuel to cause the fuel to have a swirling component of motion; and providing at least one air feed slot in fluid communication with the air swirler passage and extending in non-radial relation thereto for supplying air to the air swirler passage.