Liquid delivery apparatus and method for liquid fuel burners and liquid atomizers
Atomizing means are described of the type including a plenum having an exterior wall with a small aperture therethrough through which pressurized air delivered from pressurized source means is caused to issue, the exterior surface of the wall being smooth and convex. An improvement is described consisting of a tube through which liquid fuel from a fuel supply means is to be flowed over the exterior surface and across the aperture, the tube having a downwardly directed, substantially straight portion at its exit end with a center line, the straight portion terminating above the plenum with a discharge opening having its front edge closer to the aperture than its rear edge, the distance from the front edge to the convex portion being from 1.5 to 2.0 times the distance from the rear edge to the convex portion both distances being measured parallel to the centerline, whereby when fuel flows through the tube at low flow rates suitable for low atomization rates, the tube causes the fuel stream between the discharge opening and the exterior surface to take on a bulbous shape which minimized the film thickness at the aperture; and when fuel flows through the tube at higher flow rates suitable for high atomization rates, the tube causes the fuel stream between the discharge opening and the exterior surface to direct itself toward the apertrue to thereby increase the film thickness at the aperture and means for igniting the atomized liquid fuel.
- Assignee:
- NOV; EDB-86-103609
- Patent Number(s):
- US 4573904
- OSTI ID:
- 5738521
- Resource Relation:
- Patent File Date: Filed date 17 Mar 1983
- Country of Publication:
- United States
- Language:
- English
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