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    Impact cooling system for cooling surface e.g. of combustion chamber wall
    2.
    发明专利
    Impact cooling system for cooling surface e.g. of combustion chamber wall 未知

    公开(公告)号：DE4244302A1

    公开(公告)日：1994-06-30

    申请号：DE4244302

    申请日：1992-12-28

    Applicant: ABB RESEARCH LTD

    Inventor： HAUMANN JUERGEN DR ,  KNOEPFLI ALFRED ,  SATTELMAYER THOMAS DR ,  TRESCH RUDOLF

    IPC: F01P1/02 ,  F23R3/00 ,  F28F13/02 ,  F25D31/00 ,  F01P1/00 ,  F02C7/18

    Abstract: The system has trapezium sections (7) arranged at a constant distance from the cooling surface (5). The side of the trapezium section facing the cooling surface is provided with at least one row of holes (8). A gap (4) of constant height to the cooling surface (5) is formed. The open sides of the trapezium (7), which lie opposite the cover surface (6), form the supply surfaces (1) for the cooling air.The open sides of the trapezium which lie opposite the cooling surface (5) form the overflow surfaces (2). The intermediate space between the trapeziums provided with holes, form the trapezium shaped flow back duct (3). The supply surface (1) is much larger than the cross section of a hole. The cross section of the flow back duct is very much larger than the overflow surface (2). This again is very much larger than the cross of the gap (4) between the cooling surface and the sides of trapeziums provided with holes. The trapeziums are arranged at right angles to the flow direction of the cooling air.

    Two-stage non-polluting fuel combustion system
    4.
    发明专利
    Two-stage non-polluting fuel combustion system 未知

    公开(公告)号：DE4302847A1

    公开(公告)日：1994-08-04

    申请号：DE4302847

    申请日：1993-02-02

    Applicant: ABB RESEARCH LTD

    Inventor： HAUMANN JUERGEN DR ,  SATTELMAYER THOMAS DR

    IPC: F23C6/04 ,  F23C7/02 ,  F23R3/04 ,  F23R3/34 ,  F23C7/00 ,  F23D11/40 ,  F23D14/62 ,  F23L9/06

    Abstract: Sub-stoichiometric initial combustion with prim. air (14) takes place in the first stage, the gases from which are cooled so as to give an exhaust temp. from the second stage at which virtually no nitrous oxide is generated. Sec. air (13) gives complete combustion of the cooled gases in the latter stage.The cooling of the gases is passive, typically by radiation via a cooling jacket. In the first stage preliminary mixing can take place, pref. using a double-cone burner (2). The initial combustion chamber (6) can protrude into the main one (7), which is enclosed by a wall (3). A cylindrical wall (4) encloses the initial chamber, and is connected to a burner (1) at the inlet end, while at its mouth is a mixing system for the sec. air, which is supplied via a separate conduit (11) passing through the chamber wall.

    Pre=mix combustion process
    9.
    发明专利
    Pre=mix combustion process 未知

    公开(公告)号：DE19542644A1

    公开(公告)日：1997-05-22

    申请号：DE19542644

    申请日：1995-11-17

    Applicant: ABB RESEARCH LTD

    Inventor： EROGLU ADNAN DR ,  HAUMANN JUERGEN DR ,  SATTELMAYER THOMAS DR

    IPC: F23C6/04 ,  F23R3/16 ,  F23R3/34 ,  F23R3/30 ,  F23D14/02 ,  F23R3/02

    Abstract: The pre-mix combustion process involves using fuel (7,8) and a working gas (3,4,9) in preparation for combustion. There are at least two stages (1,2). In the first stage (1), fuel (7) and combustion air (3) with excess of air are mixed in a mixer (21). The mixture (23) thus formed is stabilised by a flame stabiliser (11) and burned. In the second stage, fuel (8), combustion air (4) and/or smoke gas (9) are mixed in a mixer (22). The resultant mixture (24) is mixed with exhaust gas (25) from the first stage. This mixture (12) is then burned. In the second stage, combustion air may be used and with the excess air being, at least, as large as that of the first stage.

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