(19)
(11) EP 1 584 868 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.03.2006 Bulletin 2006/11

(43) Date of publication A2:
12.10.2005 Bulletin 2005/41

(21) Application number: 05252224.0

(22) Date of filing: 08.04.2005
(51) International Patent Classification (IPC): 
F23D 14/02(2006.01)
F23D 14/10(2006.01)
 F23D 14/58(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR LV MK YU

(30) Priority: 09.04.2004 JP 2004115349

(71) Applicant: Rinnai Corporation
Nagoya-shi, Aichi-ken 454-0802 (JP)

(72) Inventors:
  • Tachi, Misako, Rinnai Corporation
    Nagoya-shi Aichi 454-0802 (JP)
  • Takasu, Yoshihiko, Rinnai Corporation
    Nagoya-shi Aichi 454-0802 (JP)

(74) Representative: Fenlon, Christine Lesley 
Haseltine Lake, Imperial House, 15-19 Kingsway
London WC2B 6UD
London WC2B 6UD (GB)

   


(54) Cylindrical burner


(57) The invention provides a cylindrical burner including: a heat chamber having a plurality of burner ports; and a distribution pipe in the heat chamber having a plurality of distribution holes, wherein, even if a mixed gas is supplied while keeping a motion component in a radial direction of a heat chamber, uniform combustion is performed over an entire periphery of the heat chamber. An inlet pipe, which extends in an axial direction to a position in front of a top end of the heat chamber, is provided in the distribution pipe to rectify the mixed gas into a flow that hardly has a motion component in the radial direction and supply the mixed gas into the distribution pipe. An annular baffle board, which narrows a gap between the distribution pipe and the heat chamber, is provided in an outer periphery of the distribution pipe a predetermined distance apart to the base end side from the top end of the inlet pipe. The distribution holes are not formed in the distribution pipe in a portion closer to the inlet pipe in an axial direction area between the top end of the inlet pipe and the top end of the heat chamber and a portion between the top end of the inlet pipe and a position near an arrangement section of the baffle board.







Search report