EP 3043115 B1 20180509 - Method for operating a premix gas burner
Title (en)
Method for operating a premix gas burner
Title (de)
Verfahren zum Betreiben eines Vormischgasbrenners
Title (fr)
Procédé pour faire fonctionner un brûleur à gaz à prémélange
Publication
Application
Priority
EP 15150797 A 20150112
Abstract (en)
[origin: EP3043115A1] Method for operating a premix gas burner (10), wherein during burner-on phases a defined gas/air mixture having a defined mixing ratio of gas and air is provided to a burner chamber (11) of the gas burner (10) for combusting the defined gas/air mixture within the burner chamber (11). The defined gas/air mixture is provided by a mixing device (23) mixing an air flow provided by an air duct (15) with a gas flow provided by a gas duct (16). The air flow provided by the air duct (15) depends on a fan speed of a fan (14) assigned to the air duct (16) or the burner chamber (11) or an exhaust duct (27). The gas flow provided by the gas duct (16) depends on a position of at least one gas valve (18, 19) assigned to the gas duct (16). Flames (12) resulting from the combustion of the defined gas/air mixture within the burner chamber (11) are monitored by an ionization sensor (13). Exhaust gas resulting from the combustion of the defined gas/air mixture within the burner chamber (11) leaves the burner chamber (11) though the exhaust duct (27) of the burner chamber (11) to which a temperature sensor (25) is assigned. During burner-on phases a pre-purge-check and an ignition-check and a flue-check and a running-check and a gas-pressure-check and a post-purge-check are executable by monitoring and analysing an ionization signal of the ionization sensor (13) and/or a signal being indicative of a power consumption of the fan (14) and/or a fan speed signal of the fan (14) and/or an exhaust gas temperature signal of the temperature sensor (25) in order to detect a potential blockage within the gas burner (10), wherein the combustion in the gas burner (10) is stopped or will be brought to a level where the combustion is hygienic if a potential blockage within the gas burner (10) is detected. (Figure 1)
IPC 8 full level
F23N 5/00 (2006.01); F23D 14/02 (2006.01); F23N 5/12 (2006.01); F23N 5/24 (2006.01)
CPC (source: EP)
F23D 14/02 (2013.01); F23N 5/003 (2013.01); F23N 5/12 (2013.01); F23N 5/24 (2013.01); F23N 2225/10 (2020.01); F23N 2227/02 (2020.01); F23N 2227/04 (2020.01); F23N 2227/06 (2020.01); F23N 2231/18 (2020.01); F23N 2233/04 (2020.01)
Designated contracting state (EPC)
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
DOCDB simple family (publication)
DOCDB simple family (application)
EP 15150797 A 20150112