(19)
(11) EP 1 582 811 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.12.2011 Bulletin 2011/50

(43) Date of publication A2:
05.10.2005 Bulletin 2005/40

(21) Application number: 05251922.0

(22) Date of filing: 29.03.2005
(51) International Patent Classification (IPC): 
F23D 14/02(2006.01)
 F23D 14/72(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: 29.03.2004 JP 2004096338

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

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

(74) Representative: Fenlon, Christine Lesley et al
Haseltine Lake LLP Lincoln House, 5th Floor 300 High Holborn
London WC1V 7JH
London WC1V 7JH (GB)

   


(54) Cylindrical burner


(57) In a cylindrical burner in which a heat chamber 1, which is constituted by combining plural ceramic plates 7 in a cylindrical shape, is sandwiched from both sides in an axial direction thereof by a pair of holding plates 3 and 4, a conductive film 71 is formed on an outer peripheral surface of a predetermined ceramic plate and grounded via a grounding terminal 9 such that voltage is applied between a flame rod 8 and the conductive film. The conductive film and the grounding terminal are connected surely to warrant reliability of flame detection by the flame rod. A conductive film 72 continuing to the conductive film 71 on the outer peripheral surface is formed on an end face of the predetermined ceramic plate 7. The grounding terminal 9 is provided on the holding plate 3 to be in abutment against the conductive film 72 on the end face of the predetermined ceramic plate 7.







Search report