Global Patent Index - EP 0993582 A1

EP 0993582 A1 2000-04-19 - OVERFEED BURNER FOR SOLID FUEL AND METHOD OF ITS OPERATION

Title (en)

OVERFEED BURNER FOR SOLID FUEL AND METHOD OF ITS OPERATION

Title (de)

VON OBEN GESPEISTER BRENNER FÜR FESTEN BRENNSTOFF UND VERFAHREN ZU DESSEN BETRIEB

Title (fr)

BRULEUR A ALIMENTATION PAR LE HAUT DESTINE A UN COMBUSTIBLE SOLIDE ET SON MODE DE FONCTIONNEMENT

Publication

EP 0993582 A1 (EN)

Application

EP 98931172 A

Priority

  • SE 9801218 W
  • SE 9702515 A

Abstract (en)

[origin: WO9900626A1] Overfeed burner with controllable output for solid fuels, such as chips or coal, comprising a combustion chamber (2), downwardly delimited by a grate (3), a burner pipe (14) for unburned gases connected to the combustion chamber, and means for supplying primary and secondary air. Distinguishing features are that the grate (3) is horizontally rotatable and vertically movable for changing the volume of the combustion chamber (2), that a restrictable secondary air inlet (16) and a damper (13), which is equipped with a controllable secondary air inlet (15), are arranged in the passage (12) between the combustion chamber and the burner pipe, and a controllable fan (21) for feeding combustion air. A method of operation includes lowering the output by lowering the speed of the fan (21), then throttling the passage (12) between the combustion chamber and the burner pipe, reducing the supply of secondary air, reducing the rotation speed of the grate (3) and closing a damper (23) for over-fire air.

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

F23B 1/16; F23B 1/24; F23B 5/04; F23N 5/20; F23H 9/00; F23H 17/06; F23L 9/00; F23L 11/00

IPC 8 full level (invention and additional information)

F23H 17/06 (2006.01); F23J 1/06 (2006.01); F23K 3/16 (2006.01); F23L 9/04 (2006.01); F23L 11/00 (2006.01); F23M 11/02 (2006.01)

CPC (invention and additional information)

F23K 3/16 (2013.01); F23B 1/24 (2013.01); F23B 5/04 (2013.01); F23H 17/06 (2013.01); F23J 1/06 (2013.01); F23L 9/04 (2013.01); F23L 11/00 (2013.01); F23M 11/02 (2013.01); F23G 2209/261 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9900626 A1 19990107; AU 8135898 A 19990119; CA 2293779 A1 19990107; CN 1258342 A 20000628; EA 001628 B1 20010625; EA 200000079 A1 20000626; EP 0993582 A1 20000419; NO 996247 A 19991216; NO 996247 D0 19991216; SE 520073 C2 20030520; SE 9702515 D0 19970630; SE 9702515 L 19981231

INPADOC legal status


2003-03-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020901

2002-03-13 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020129

2000-04-19 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991207

2000-04-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE