Global patent index - EP 1060348 A1

EP 1060348 A1 2000-12-20 - DEVICE FOR ACTIVELY REGULATING AIR/GAS RATIO IN A BURNER COMPRISING A DIFFERENTIAL PRESSURE MEASURING DEVICE

Title (en)

DEVICE FOR ACTIVELY REGULATING AIR/GAS RATIO IN A BURNER COMPRISING A DIFFERENTIAL PRESSURE MEASURING DEVICE

Title (de)

VORRICHTUNG ZUR REGELUNG DES LUFT/GASVERHÄLTNISSES EINES BRENNERS MIT EINER DRUCKUNTERSCHIEDMESSVORRICHTUNG

Title (fr)

DISPOSITIF POUR LA REGULATION ACTIVE DU RAPPORT AIR/GAZ D'UN BRULEUR COMPRENANT UN DISPOSITIF DE MESURE DE PRESSION DIFFERENTIELLE

Publication

EP 1060348 A1 (FR)

Application

EP 99937976 A

Priority

  • FR 9900505 W
  • FR 9802794 A

Abstract (en)

[origin: FR2775782A1] The invention concerns a device for actively regulating a burner air/gas ratio comprising one of two differential pressure measuring devices (42) each of which is equipped with a differential sensor (1) with two inlets (2 and 3). Said inlets are respectively connected to pressure intakes (4 and 5), in one of which is placed in a calibrated throttling orifice (27). The regulating device comprises a two-way valve (28) which, when closed, isolates the inlets (2 and 3) from each other and, when open, communicates them with each other. A measuring circuit (26) is provided equipped with storage means for memorising at least two output signal values of the sensors, a control unit (23) for switching the valve (28) and causing a first output signal value of the sensor (1) to be memorised in the storage means when the valve (28) is closed, and a second output signal value of the sensor (1) to be memorised when the valve (28) is open, and subtracting means to compute the difference between the two memorised output signal values of the sensor (1), thereby eliminating possible variations. In a preferred embodiment, the regulating device comprises one single differential pressure measuring device.

IPC 1-7 (main, further and additional classification)

F23N 5/24

IPC 8 full level (invention and additional information)

F23N 1/02 (2006.01); F23N 5/18 (2006.01); F23N 5/24 (2006.01)

CPC (invention and additional information)

F23N 5/242 (2013.01); F23N 5/188 (2013.01); F23N 1/02 (2013.01); F23N 2025/04 (2013.01); F23N 2033/08 (2013.01); F23N 2035/16 (2013.01); F23N 2900/05181 (2013.01)

Citation (search report)

See references of WO 9945325A1

Designated contracting state (EPC)

BE CH DE ES GB IT LI LU NL PT

EPO simple patent family

FR 2775782 A1 19990910; FR 2775782 B1 20000505; CA 2322677 A1 19990910; DE 69914063 D1 20040212; EP 1060348 A1 20001220; EP 1060348 B1 20040107; JP 2002506190 A 20020226; US 6533574 B1 20030318; WO 9945325 A1 19990910

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