(19)
(11) EP 0 478 305 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.11.1993 Bulletin 1993/47

(43) Date of publication A2:
01.04.1992 Bulletin 1992/14

(21) Application number: 91308745.8

(22) Date of filing: 25.09.1991
(51) International Patent Classification (IPC)5: F23D 11/10, F23C 7/00, F23D 23/00, F23K 5/20, F23J 15/00, F23L 7/00, F23R 3/16, F02C 7/224
(84) Designated Contracting States:
CH DE FR GB LI

(30) Priority: 26.09.1990 JP 256404/90

(71) Applicant: HITACHI, LTD.
Chiyoda-ku, Tokyo 101 (JP)

(72) Inventors:
  • Kobayashi, Hironobu
    Katsuta-shi, Ibaraki-ken (JP)
  • Azuhata, Shigeru
    Hitachi-shi, Ibaraki-ken (JP)
  • Taniguchi, Masayuki
    Katsuta-shi, Ibaraki-ken (JP)
  • Murakami, Tadayoshi
    Hitachi-shi, Ibaraki-ken (JP)
  • Narato, Kiyoshi
    Taga-gun, Ibaraki-ken (JP)
  • Kuroda, Michio
    Hitachi-shi Ibaraki-ken (JP)
  • Tsukahara, Satoshi
    Hitachi-shi Ibaraki-ken (JP)

(74) Representative: Paget, Hugh Charles Edward et al
MEWBURN ELLIS York House 23 Kingsway
London WC2B 6HP
London WC2B 6HP (GB)


(56) References cited: : 
   
       


    (54) Combustor and combustion apparatus


    (57) A combustor has a premixing type combustion burner (30) which has an atomizer (40) for ejecting a liquid fuel together with combustion air to atomize the liquid fuel. The atomizer is comprised of an inner shell (45) to an inner peripheral surface of which the liquid fuel is supplied, an outer shell (41) defining a passage for the combustion air running substantially straight between the outer shell itself and an outer peripheral surface of the inner shell, and a swirling-flow guide plate (50) for swirling the combustion air passed into the inner shell, while directing it in a downstream direction. The combustor further includes a resistor (35) abruptly decreased in sectional area downstream and provided substantially downstream of the center of the swirling flow and in the vicinity of an outlet of the premixing type combustion burner for providing a resistance to a premixture ejected from the premixing type combustion burner.






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