(19)
(11) EP 1 985 926 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.04.2016 Bulletin 2016/15

(43) Date of publication A2:
29.10.2008 Bulletin 2008/44

(21) Application number: 08007934.6

(22) Date of filing: 24.04.2008
(51) International Patent Classification (IPC): 
F23R 3/28(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 26.04.2007 JP 2007116304
31.03.2008 JP 2008089152

(71) Applicant: Mitsubishi Hitachi Power Systems, Ltd.
Yokohama 220-8401 (JP)

(72) Inventors:
  • Saito, Takeo
    Chiyoda-ku Tokyo 100-8220 (JP)
  • Miura, Keisuke
    Chiyoda-ku Tokyo 100-8220 (JP)
  • Koyama, Kazuhito
    Chiyoda-ku Tokyo 100-8220 (JP)
  • Inoue, Hiroshi
    Chiyoda-ku Tokyo 100-8220 (JP)

(74) Representative: MERH-IP Matias Erny Reichl Hoffmann Patentanwälte PartG mbB 
Paul-Heyse-Strasse 29
80336 München
80336 München (DE)

   


(54) Combustion equipment and combustion method


(57) Combustion equipment of a coaxial jet combustion scheme is provided that includes: a burner plate (11) in which fuel and air are mixed with each other while the fuel and air pass through an air hole (12); a burner plate extension which is a portion of the burner plate (11) and extends toward a combustion chamber side spaced apart from the air hole (12); and a protrusion (1) disposed on the combustion chamber side of the burner plate extension so as to protrude in a direction where flow of the fuel moves. In the combustion equipment, a gap between opposite portions of the protrusion (1) is greater than a diameter of the air hole (12) and a flame source forming area is defined between the burner plate (11), the burner plate extension and the protrusion (1). The combustion equipment of a coaxial jet combustion scheme can achieve a further reduction in NOx emissions.







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