Dual-purpose combustor for ordinary combustion and pulse...

F - Mech Eng,Light,Heat,Weapons – 23 – R

Patent

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F23R 7/00 (2006.01) F23C 3/00 (2006.01) F23C 6/04 (2006.01) F23C 15/00 (2006.01) F26B 23/02 (2006.01)

Patent

CA 2221898

A dual-purpose combustor for ordinary combustion and pulse combustion especially suited to be installed for a spray dryer, which is used not only as an ordinary combustion gas generator but also as a pulse combustion gas generator capable of generating high frequency sound waves and hot blast in large capacity to enhance the drying efficiency. The dual-purpose combustor is composed essentially of successionally connected chambers: a concentric narrow ring form fuel/combustion air mixed gas supply slit, a concentric wider ring form combustion chamber having an ignition means and a narrow outlet portion, a concentric narrow ring form exhaust gas chamber, a concentric wider ring form upper secondary combustion chamber, and a concentric cylindrical form lower secondary combustion chamber having the same diameter with the outer diameter of the concentric ring form upper secondary combustion chamber.

La présente invention a pour objet une chambre de combustion double service pour combustion ordinaire et combustion pulsatoire convenant particulièrement aux séchoirs par atomisation, qui en plus d'être utilisée comme générateur de gaz ordinaire est aussi utilisé comme générateur de gaz pulsatoire capable de produire des ondes sonores haute fréquence et des vents chauds en grandes quantités pour améliorer l'efficacité du séchage. La chambre de combustion double service comporte essentiellement une succession de chambres interreliées : un anneau concentrique étroit fait office de fente pour la distribution du mélange combustible et air de combustion, un anneau concentrique de plus grand diamètre forme une chambre de combustion avec dispositif d'allumage et conduit de sortie de faible diamètre, un anneau concentrique étroit forme la chambre d'évacuation, un anneau concentrique de plus grand diamètre forme une chambre de combustion secondaire, et un cylindre concentrique forme une chambre de combustion secondaire inférieure dont le diamètre est égal au diamètre extérieur de l'anneau concentrique formant la chambre de combustion secondaire supérieure.

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