IN-CYLINDER SWIRL COMBUSTOR

Japanese Patent JP3873119

B2

PROBLEM TO BE SOLVED: To provide an in-cylinder swirl combustor capable of maintaining a flame even when the fuel/air ratio is less than the lean flammable limit of a homogeneous premixed gas, and capable of complete combustion and low NOx combustion without regulating the amount of air flow.
SOLUTION: The in-cylinder swirl combustor is equipped with a cylindrical combustion chamber 11 with one end as a bottom surface 12, and inside it, a swirling flow 22 composed of air, fuel or mixed air/fuel flowing from a slot-like opening 18 in the tangential direction is formed around a central axis 20 and a cylindrical flame surface substantially symmetric in regard to the central axis 20 is maintained. On the upper side of the cylindrical combustion chamber 11, a pilot combustion chamber 11a having a smaller diameter than that of the cylindrical combustion chamber 11 is formed, and inside it, like the swirling flow 22, a pilot swirling flow 22a and a cylindrical pilot flame is formed, which spreads outward when flowing to the cylindrical combustion chamber 11 and surely becomes an ignition source even when the fuel/air ratio is smaller than the lean flammable limit.

JP5676647	Combustion chamber for turbomachinery equipped with an injection device and the injection device
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JP2013242134	FUEL NOZZLE CAP

Shigeru Hayashi

JP2002211801A

January 24, 2007

July 19, 2002

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Japan Aerospace Exploration Agency

F23R3/12; F23C99/00; F23D14/02; F23R3/30; F23R3/34; (IPC1-7): F23R3/12; F23C11/00; F23D14/02; F23R3/30; F23R3/34

JP7071759A
JP6185731A
JP2000097407A
JP2000274689A
JP4131620A
JP4131617A
JP8145362A
JP61025923A
JP55126568U

Shigenobu Oshiro
Masuo Yamada
Fumio Sato

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