Patent ID: 7004749
Filing Date: 2006-02-28
Classification: F23C,F23D,F23N

Abstract:
1. A combustion apparatus comprising: a spraying means for spraying a fuel, a feed channel for feeding the fuel to the spraying means, a compressing means disposed in the feed channel so as to compress the fuel flowing towards the spraying means, the spraying means being a nozzle having a spray mouth, an internal feed path and an internal return path, a valve in the feed channel through which fuel is discharged towards the spraying means, a return channel connected to the spraying means so as to extend back to a junction where the return channel merges into the feed channel on an upstream side of the compressing means, and an intermittently operating valve disposed in the return channel so as to be closed and opened intermittently or periodically, so that a portion of the fuel once delivered to the spraying means through the feed channel is allowed to flow back through the internal return path and the return channel into the junction, wherein the intermittently operating valve is an injector valve comprising a throttling valve body capable of closing and opening the return channel to regulate a flow rate of the fuel, the intermittently operating valve cooperating with the valve in the feed channel to control spraying of fuel into the combustion chamber at a desired rate.