High efficiency fuel oil atomizer

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

Patent

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Details

F23D 11/10 (2006.01)

Patent

CA 2365615

A high efficiency liquid fuel atomizer includes an elongated generally tubular member (22) defining a liquid fuel pre-atomization chamber (34). The tubular member has an outer wall (32) that extends around the chamber, an upstream end adapted for connection to a source of liquid fuel and a downstream fuel delivery outlet. The atomizer also includes a larger diameter outer tube that is concentric to the tubular member and defines a generally annular pressurized atomizing fluid supply conduit (28) disposed in surrounding relationship relative to the chamber. The outer tube has an inlet adapted for connection to a source of pressurized atomizing fluid and a downstream pressurized atomizing fluid delivery outlet. One or more orifices (30) are provided in the outer wall of the tubular member so as to intercommunicate the chamber and the annular conduit to permit pressurized atomizing fluid to enter the chamber and at least partially atomize the fluid fuel therein. Also disclosed is an atomizing tip (16) which includes a novel y-shaped for further atomizing the liquid fuel.

L'invention concerne un pulvérisateur de combustible liquide à rendement élevé qui comprend un élément tubulaire généralement allongé (22) définissant une chambre de pulvérisation préalable de combustible liquide (34). Cet élément tubulaire a une paroi externe (32) s'étendant autour de la chambre, une extrémité amont servant au raccordement à une source de combustible liquide et un orifice aval de distribution de combustible. Le pulvérisateur comprend également un tube externe de diamètre plus grand, qui est concentrique à l'élément tubulaire et qui définit un conduit généralement annulaire (28) d'alimentation en fluide de pulvérisation sous pression entourant la chambre. Le tube externe comporte un orifice d'entrée servant au raccordement à une source de fluide de pulvérisation sous pression et un orifice de sortie aval servant à la distribution de fluide de pulvérisation sous pression. La paroi externe de l'élément tubulaire présente un ou plusieurs orifices (30) servant à établir une communication entre la chambre et le conduit annulaire afin de permettre au fluide de pulvérisation sous pression d'entrer dans la chambre et d'y pulvériser au moins partiellement le combustible liquide. L'invention concerne également un bec de pulvérisation (16) qui comprend un nouveau système d'orifice en Y pour une pulvérisation plus poussée du combustible liquide.

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