Title (en)

Flame guarding system

Title (de)

Flammenüberwachungssystem

Title (fr)

Système de surveillance de flamme

Publication

EP 1519114 A1 20050330 (EN)

Application

EP 04104397 A 20040913

Priority

NL 1024388 A 20030926

Abstract (en)

The invention relates to a flame monitoring system (1) for a combustion chamber (3) provided with an ionisation sensor (4), comprising a signal generator (8) for supplying a monitoring signal (VAC) to the ionisation sensor (4) and a signal measuring unit (11) for measuring at least one ionisation signal (VDC) from the ionisation sensor. The flame monitoring system (1) is further arranged for interrupting the supply of the monitoring signal (VAC) to the ionisation sensor (4) during at least one interval (to) and measuring a zero signal (V0) substantially during said interval (t0). <IMAGE>

IPC 1-7

F23N 5/12; F23N 5/20

IPC 8 full level

F23N 5/12 (2006.01); F23N 5/20 (2006.01)

CPC (source: EP)

F23N 5/123 (2013.01); F23N 5/203 (2013.01); F23N 2223/12 (2020.01); F23N 2229/12 (2020.01)

Citation (applicant)

• EP 1300362 A1 20030409 - DAIKIN IND LTD [JP]
• EP 1176364 A1 20020130 - NEFIT BUDERUS B V [NL]

Citation (search report)

• [A] US 5472336 A 19951205 - ADAMS JOHN T [US], et al
• [AD] EP 1300632 A2 20030409 - BOSCH GMBH ROBERT [DE]
• [A] US 4427363 A 19840124 - HAMMOND PAUL S [GB]
• [A] PATENT ABSTRACTS OF JAPAN vol. 0110, no. 90 (M - 573) 20 March 1987 (1987-03-20)
• [A] PATENT ABSTRACTS OF JAPAN vol. 0110, no. 90 (M - 573) 20 March 1987 (1987-03-20)

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 1519114 A1 20050330; NL 1024388 C2 20050331

DOCDB simple family (application)

EP 04104397 A 20040913; NL 1024388 A 20030926