(19)
(11) EP 0 145 382 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.10.1985 Bulletin 1985/40

(43) Date of publication A2:
19.06.1985 Bulletin 1985/25

(21) Application number: 84308114

(22) Date of filing: 22.11.1984
(84) Designated Contracting States:
DE GB IT NL SE

(30) Priority: 22.11.1983 GB 8331128

(71) Applicant: Babcock Product Engineering Ltd.
 ()

(72) Inventor:
  • Fuller, Brian Wilfred
     ()

   


(54) Improvements in or relating to axial swirl generators


(57) @ The invention provides a burner that may be mounted at the wall (2) of a furnace. A mixture of pulverised fuel and primary air is discharged through a duct (4) and secondary air is discharged through a duct (8). The duct (8) includes a portion (16) that is convergent in the direction of flow. The convergent portion (16) houses a unit in the form of two concentric rings (22) and (23) between which are connected swirl inducing vanes (21). The unit can be moved between a forward position in which secondary air can pass only between the vanes and a retracted position in which part of the secondary air can flow between the vanes and part can flow as an envelope around the unit.






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