公开(公告)号：JPH10325542A

公开(公告)日：1998-12-08

申请号：JP13179398

申请日：1998-05-14

Applicant: ABB RESEARCH LTD

Inventor： ANDERSSON LEIF ,  JANSOHN PETER DR ,  LLOYD JONATHAN

IPC: F23R3/10 ,  F23C7/00 ,  F23C7/06 ,  F23D14/62 ,  F23R3/04 ,  F23R3/26 ,  F23R3/54

Abstract: PROBLEM TO BE SOLVED: To guarantee the optimum injection flow of a burner regardless of variations in a mass flow of cooling air and combustion air. SOLUTION: At least one cooling path 10 is extended into a plenum 13 and formed inside the plenum as diffuser 14 having an orifice 12 into the plenum. At least one of openings 15 and 15' of a burner dome 4 are arranged in the area of the diffuser 14. Bypass paths 16 and 16' having orifices 17 and 17' into the plenum 13 connected on the downstream side of the individual openings. The orifices of the respective bypass paths are turned at least almost parallel with the orifice of the diffuser and formed being shifted in steps outward. Each of the bypass paths has a pressure adjustor.

公开(公告)号：DE19720786A1

公开(公告)日：1998-11-19

申请号：DE19720786

申请日：1997-05-17

Applicant: ABB RESEARCH LTD

Inventor： ANDERSSON LEIF ,  JANSOHN PETER DR ,  LLOYD JONATHAN

IPC: F23R3/10 ,  F23C7/00 ,  F23C7/06 ,  F23D14/62 ,  F23R3/04 ,  F23R3/26 ,  F23R3/54 ,  F23R3/02 ,  F23D11/40

Abstract: The plenum (13), externally defined by a burner hood (4) for at least one main air current (11), contains at least one burner (5). The combustion area (2), downstream from the plenum, is enclosed by at least one cooler duct (10) opening into the plenum. The hood has at least one opening (15,15') for the subsidiary air current (20). The cooler duct extends as far as the plenum and acts as diffuser (14) inside the plenum, with an opening (12) into the plenum. Downstream for each opening in the hood is a bypass duct (16,16') each of which has a pressure-regulator.