EP 0821199 B1 20001115 - Positive safety device for the gas supply in a burner
Title (en)
Positive safety device for the gas supply in a burner
Title (de)
Positive Sicherheitsvorrichtung der Gaszufuhr in einem Brenner
Title (fr)
Dispositif de sécurisation positive d'admission de gaz dans un brûleur
Publication
Application
Priority
FR 9609372 A 19960725
Abstract (en)
[origin: EP0821199A1] The burner admission valve (25) is initially opened by a boost-type control circuit (27), having 1W output, via a self-resetting bi-metal (SRC), guarding against flue obstruction. A second boost circuit (24), with 30 mW output, keeps the valve open. Both circuits give higher output voltages than the battery which provides power supplies, and the latter is insufficient to operate the valve. The burner is lit by a spark generator (20), based on an oscillator (21) and a discharge circuit (22) giving a 15 kV output for 5 microseconds; this is associated with a flame detector (11) using the diode effect of ionisation. These devices are directed at an igniter gas nozzle near the burner. The equipment is further described in European Patent 0 821 198 (q.v.).
IPC 1-7
IPC 8 full level
F23N 5/24 (2006.01); F23N 1/08 (2006.01); F23N 5/12 (2006.01); F23N 5/20 (2006.01)
CPC (source: EP)
F23N 5/245 (2013.01); F23N 1/08 (2013.01); F23N 5/12 (2013.01); F23N 5/20 (2013.01); F23N 2227/36 (2020.01); F23N 2235/14 (2020.01); F23N 2235/16 (2020.01); F23N 2235/18 (2020.01)
Designated contracting state (EPC)
AT BE DE ES FR GB NL
DOCDB simple family (publication)
EP 0821199 A1 19980128; EP 0821199 B1 20001115; AT E197639 T1 20001215; DE 69703519 D1 20001221; DE 69703519 T2 20010607; ES 2153169 T3 20010216; FR 2751730 A1 19980130; FR 2751730 B1 19981009
DOCDB simple family (application)
EP 97401758 A 19970722; AT 97401758 T 19970722; DE 69703519 T 19970722; ES 97401758 T 19970722; FR 9609372 A 19960725