Combustion chamber device with a rotary cup-shaped fuel-spreader

Details Combustion chamber device with a rotary cup-shaped fuel-spreader Combustion chamber device with a rotary cup-shaped fuel-spreader

1974-09-17

1976-03-30

Sprague, Kenneth W.

Combustion

Fuel disperser installed in furnace

Rotary disperser projects at surrounding flange surface

431352, 431171, 431186, 23921411, F23D 1104

Patent

active

039472302

ABSTRACT:
A combustion chamber device includes a combustion chamber and a rotatable cup-shaped fuel spreader arranged centrally therein. Liquid fuel is supplied to within said cup for being distributed therein and discharged therefrom and intermixed with an air stream supplied to said combustion chamber to form an air-fuel mixture which then is ignited. The spreader cup is located adjacent a combustion zone in the combustion chamber and provided with an enclosing insulation in the form of a layer of axially flowing air. According to the invention, the fuel spreader cup has a substantially straight and cylindrical inner surface with a circumferential shoulder or threshold adjacent the open end, said shoulder having a radial thickness sufficient for maintaining inside said spreader cup a fuel layer of required depth for obtaining a predetermined fuel supply volume in the cup. The spreader cup and the adjacent portions of the combustion chamber are shaped so as to provide around the rotary spreader cup a return-flow zone for the air-fuel-mixture in which is maintained a primary combustion zone, which pre-heats the cup so as to bring same to normally operate as vaporizer, while sufficient air is supplied to the air layer surrounding the cup for avoiding over-heating and boiling of the fuel in the cup.

REFERENCES:
patent: 3090420 (1963-05-01), Sacco
patent: 3252497 (1966-05-01), McGillis
patent: 3844705 (1974-10-01), Miyahara

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