EP 0480312 B1 19940727 - Air flow monitor device for burners.
Title (en)
Air flow monitor device for burners.
Title (de)
Luftstromüberwachungseinrichtung für Brenneranlagen.
Title (fr)
Dispositif de sécurité de courant d'air pour des brûleurs.
Publication
Application
Priority
EP 90119383 A 19901010
Abstract (en)
[origin: EP0480312A1] An intrinsically safe airflow monitoring device for burners contains a flow switch (sp), which can be connected via a two-wire line, and whose open position is checked before switching on the fan (F). To this end, the series circuit of the flow switch (sp) and the fan (F) is in parallel with the energising winding of a relay (RL), which is connected to the mains voltage (N) via a high-resistance resistor (R1). If the flow switch (SP) should be closed before the fan (F) is switched on, the relay (RL1) cannot respond because the flow switch and the fan form a low-resistance link over it. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
F23N 5/184 (2013.01); F23N 5/242 (2013.01); F23N 2005/182 (2013.01); F23N 2225/06 (2020.01); F23N 2231/10 (2020.01); F23N 2233/06 (2020.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0480312 A1 19920415; EP 0480312 B1 19940727; DE 59102338 D1 19940901
DOCDB simple family (application)
EP 91116898 A 19911004; DE 59102338 T 19911004