EP 0404731 A3 19920102 - BURNER WITH TORIC-CYCLONIC FLOW FOR BOILER FIRED WITH LIQUID OR GASEOUS FUEL

Title (en)

BURNER WITH TORIC-CYCLONIC FLOW FOR BOILER FIRED WITH LIQUID OR GASEOUS FUEL

Publication

EP 0404731 A3 19920102 (FR)

Application

EP 90810471 A 19900622

Priority

FR 8908585 A 19890622

Abstract (en)

[origin: EP0404731A2] The burner comprises a tubular body composed of an inner bush (12) and an outer bush (10). The inner bush (12) carries a spray nozzle (11), an ignition electrode (23) and an observation tube (40). An annular space (E) arranged between the two bushes provides the inlet for a flow of oxidiser. A primary flow (A) of supply of oxidiser gas is led in through apertures (15) towards a deflector plate (18). This arrangement permits an area of toric-cyclonic combustion (33) to be obtained by virtue especially of the existence of slots (16) let into the deflector plate (18) and inclined blades (13) mounted in the space (E) located between the inner bush (12) and the outer bush (10). The advantages are a better homogeneity of the mixture, an increase in the dwell time of the mixture in the combustion area and better recycling of the combustion gases. <IMAGE>

IPC 1-7

F23D 11/40; F23C 9/00

IPC 8 full level

F23C 9/00 (2006.01); F23D 11/40 (2006.01)

CPC (source: EP)

F23C 9/006 (2013.01); F23D 11/402 (2013.01); F23C 2202/40 (2013.01)

Citation (search report)

[Y] DE 2624649 A1 19771215 - DANFOSS AS
[Y] DE 2623759 A1 19771201 - KLOECKNER & CO
[A] FR 2202580 A5 19740503 - OFR OFFICINE FRATELLI RIELLO S [IT]
[A] FR 2348439 A1 19771110 - ZAEGEL HELD SA [FR]
[A] DE 3542174 C1 19870702 - ELECTRO OIL GMBH
[A] WO 8607434 A1 19861218 - MUELLER RUDOLF
[A] DE 2821932 A1 19791122 - BODEMER KARL
[A] US 2531538 A 19501128 - SMITH CECIL W

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0404731 A2 19901227; EP 0404731 A3 19920102; EP 0404731 B1 19950125; AT E117788 T1 19950215; DE 69016281 D1 19950309; DE 69016281 T2 19950720; FR 2648897 A1 19901228

DOCDB simple family (application)

EP 90810471 A 19900622; AT 90810471 T 19900622; DE 69016281 T 19900622; FR 8908585 A 19890622