| 摘要 |
PURPOSE:To atomize the liq. droplet to be sprayed by providing a throttle part having a cross section smaller than a confluent part side to the ejection port side of a nozzle in the confluent passage of a two-fluid spray nozzle. CONSTITUTION:The spray nozzle especially the two-fluid spray nozzle is used for atomizing low-range fuel oil and reducing the dust in waste gas, when a fluid to be atomized and an atomization fluid are fed forcibly under pressure. A confluent passage 9A is provided and connected to the conical part of an atomization fluid passage 7, and a confluent passage 9B leading from the conflu ent passage 9A to the ejection port on the front surface of the nozzle forms a throttle part having a cross section smaller than that of the confluent part 9A. Consequently, an atomization fluid B joins the fluid A to be atomized at almost right angles to each other, and is throttled by the passage 9B. Besides, the fluid A is detached from the wall surface of the passage, and atomized uniformly by the fluid B. Accordingly, the droplet to be sprayed is atomized, and the combustion efficiency can be enhanced even when low-grade fuel oil is used.
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