公开(公告)号：JPH07280224A

公开(公告)日：1995-10-27

申请号：JP7796295

申请日：1995-04-03

Applicant: ABB MANAGEMENT AG

Inventor： RORUFU ARUTOHAUSU ,  YAAKOPU KERAA

IPC: F23R3/02 ,  F23D11/40 ,  F23D14/22 ,  F23D17/00 ,  F23D23/00

Abstract: PURPOSE: To provide a premixing burner applicable additionally to an existing premixing combustor in which a uniform velocity distribution can be attained in a mixing zone simultaneously with intimate mixing of combustion air and fuel in an extremely short section and back fire can be avoided surely without requiring any mechanical flame holder. CONSTITUTION: A gaseous and/or liquid fuel is injected into the main burner 52 having a circular duct 20 as a secondary flow into a gaseous main flow. The main flow is guided over vortex generators 9, a plurality of which are arranged next to one another around the circumference of the duct 20 through which flow takes place. Venturi nozzles 50 are arranged on the down stream side of the vortex generator and the secondary flow is introduced into the duct 20 at a most consricted part of the Venturi nozzle.

公开(公告)号：JPH07280268A

公开(公告)日：1995-10-27

申请号：JP7796595

申请日：1995-04-03

Applicant: ABB MANAGEMENT AG

Inventor： RORUFU ARUTOHAUSU ,  YAAKOPU KERAA

IPC: F23R3/12 ,  F23C9/00 ,  F23D17/00 ,  F23R3/28 ,  F23R3/30 ,  F23R3/54

Abstract: PURPOSE: To provide means for operating a combustor in the vicinity of flame extinguishing limit as lean as possible, i.e., in a range actually generating no NOx. CONSTITUTION: There is provided at least one jet injector 53 opening into a dome 51 and of which the central nozzle 54 is connected to a combustion chamber 58 via an orifice 55 in a front plate 52 and of which an annular space 56 surrounding the central nozzle 54 is loaded with a propellant.