| 摘要 |
<p>948,867. Centrifugal oil burners. E. S. DOWNS. June 2, 1961 [June 22, 1960], No. 19931/61. Heading F4T. A liquid fuel burner comprises a spinner 40 for throwing the fuel by centrifugal force outwardly, and a ring 37 of fibrous material disposed on the wall of the combustion chamber 23 so as to receive oil droplets from the spinner. The fibrous material may be a ceramic paper or felt or a ceramic woven cloth. A row of openings 36 is provided in the combustion chamber wall behind the absorbent ring 37 to supply air to the combustion chamber. The combustion chamber is disposed in an outer casing 20 and has an annular outlet formed by a cup-shaped baffle 27 and a flared end 26. The outer casing also contains an electric motor 31, a fan 29 and vanes 35 for straightening the air from the fan. The fuel spinner 40, Fig. 4, comprises a forward fan 48, a flat disc 49, a ribbed plate 50 and a second ribbed plate 51 having an extended hub 57 which is shaped to co-operate with the hollow shaft 30 of the electric motor to provide air passages 58 conducting air to the space between the ribbed plates 50, 51. The hub 57 also supports a further fan 59. Oil passes along the hollow shaft 30 and a slinging tube 61 into channels in a star-shaped plug 60 and is discharged into the space between the ribbed plates 50, 51 by the flared end 64 of the slinging tube 61. The ribs on the plates 50, 51 face each other and are radial and wedge shaped, but are angularly staggered. The space between the plates 50, 51 is aligned with the row of air openings 36 behind the fibrous ring 37. The combustion chamber has further air inlets 45 for secondary air. An axial ring 41 in the combustion chamber produces an eddy current of air adjacent the fibrous ring 37. A conical collar 44 is disposed in the combustion chamber between the absorbent ring 37 and the secondary air openings 45. The burner is ignited by an igniter 34. Specification 948,868 is referred to.</p> |
