(19)
(11) EP 2 372 247 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.03.2014 Bulletin 2014/11

(43) Date of publication A2:
05.10.2011 Bulletin 2011/40

(21) Application number: 11160114.2

(22) Date of filing: 29.03.2011
(51) International Patent Classification (IPC): 
F23N 5/24(2006.01)
 F23N 5/02(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 30.03.2010 JP 2010079498

(71) Applicant: Azbil Corporation
Chiyoda-ku Tokyo (JP)

(72) Inventors:
  • Yamada, Akira
    Tokyo 100-6419 (JP)
  • Kumazawa, Yuuichi
    Tokyo 100-6419 (JP)
  • Nakata, Tomoya
    Tokyo 100-6419 (JP)
  • Morikawa, Katsumi
    Tokyo 100-6419 (JP)

(74) Representative: Kling, Simone 
Lavoix Munich Bayerstrasse 83
80335 München
80335 München (DE)

   


(54) Combustion controlling device


(57) Two controlling devices, namely a combustion controlling device controlling the combustion of a combustion furnace, and a safety controlling device checking the operation of the devices wherein the operations are controlled by the combustion controlling device. This enables safer control of combustion because if there is a fault in either the combustion controlling device or the safety controlling device, a process can be performed by the other device to stop the combustion. Additionally, because the controlling device for controlling the structural elements that control the combustion in the boiler system and the controlling device for operational checks of the outputs from those structural elements are separate, if there is a failure in any of the structural elements or controlling devices, that failure can be detected reliably, enabling safer control of the combustion.







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