公开(公告)号：JPH09184605A

公开(公告)日：1997-07-15

申请号：JP33971896

申请日：1996-12-19

Applicant: ABB RESEARCH LTD

Inventor： HANSU PEETAA KUNEPUFUERU ,  TOOMASU RUTSUKU

IPC: F23R3/20 ,  F23C7/00 ,  F23D11/24 ,  F23D11/40 ,  F23D17/00 ,  F23R3/28

Abstract: PROBLEM TO BE SOLVED: To stabilize a flame, improve a combustion efficiency and reduce the exhaust of a toxic material by shifting upstream a fuel nozzle relative to a conical end part generated by the part member of a premix burner. SOLUTION: A fuel nozzle 103 is retracted upstream relative to an starting end part 125 conical in cross-section of flow, so that the opening 104 of the fuel nozzle 103 is located within a range between peripheral walls 101a and 102a fixed to a head side. A fuel spray 105 enters a range covered with a main current of combustion air entering the inner chamber 114 of a premix burner owing to the retraction and is decomposed into liquid drops. The entry of fuel air 115 to the fuel spray 105 improves the quality of mixture. A radially arranged opening 124 is provided in a range on the plane of the fuel spray opening 104 so that a flushing air is supplied. The fuel spray 105 improves an air mass flow passing through the opening 124 as a fuel injection pump and suppresses the flash back of a flame.

公开(公告)号：JPH09178121A

公开(公告)日：1997-07-11

申请号：JP33972796

申请日：1996-12-19

Applicant: ABB RESEARCH LTD

Inventor： HANSU PEETAA KUNEPUFUERU ,  TOOMASU RUTSUKU

IPC: F23R3/28 ,  F23C7/00 ,  F23D11/24 ,  F23D11/40 ,  F23D17/00 ,  F23R3/32

Abstract: PROBLEM TO BE SOLVED: To raise efficiency to the utmost, restrict liberation of harmful matter to the utmost and stabilize a flame. SOLUTION: A mixing interval 220 is arranged on the downstream side of a turning flow producer 100a, and the interval includes a transfer passage 201 extending in a flow direction in a first interval part 200. The transfer passage 20 serves to move a flow 40 formed in the turning flow producer 100a into a pipe 20 placed on the downstream side of the transfer passage 201, and a fuel nozzle 103 serves as a means to inject and introduce a fuel into the combustion air. The fuel nozzle is displaced to the upstream side by a predetermined interval with respect to a start end of the turning flow producer 100a.

公开(公告)号：JPH09184606A

公开(公告)日：1997-07-15

申请号：JP34382796

申请日：1996-12-24

Applicant: ABB RESEARCH LTD

Inventor： HANSU PEETAA KUNEPUFUERU ,  TOOMASU RUTSUKU

IPC: F23R3/28 ,  F23C7/00 ,  F23D11/40 ,  F23D17/00 ,  F23R3/36 ,  F23R3/58

Abstract: PROBLEM TO BE SOLVED: To achieve optimum flame positioning ensuring secure operation by improving a burner of the type composed of a spiral flow formation apparatus for a combustion air stream and a means for injection of a fuel into the combustion air stream, and completely mixing different fuels. SOLUTION: A mixing region 220 is disposed on the downstream side of a spiral flow formation apparatus 100, and the mixing region includes a transfer part passage 201 extending in a flow direction in a first region part 200 for transferring a flow 40 formed in the spiral flow formation apparatus to a pipe 20 connected with the downstream side. An outlet flat surface of the pipe with respect to a combustion chamber 30 is formed with a separation edge part for stabilizing and expanding a reverse flow region 50 produced downstream.