| 摘要 |
PURPOSE:To inhibit the dripping phenomenon of a liquid, in a two-fluid spray nozzle, by stopping the supply of gas after the lapse of a predetermined time after the supply of a liquid is stopped. CONSTITUTION:A spray nozzle comprises a central nozzle 1, an outer tubular body 2 existent around said nozzle 1 and an outer nozzle 3 connected to said tubular body 2. A liquid reserving part 3a for inhibiting the dripping of a liquid is provided at the top end of the outer nozzle 3, and a predetermined liquid A and a predetermined gas B are supplied to the central nozzle 1 and the tubular body 2, respectively, to execute a spraying process. Hereon, to stop the spraying, the supply of the liquid A is stopped at first, the supply of the gas B is continued for about t=0.5sec, and then the supply of the gas B is stopped. Hence, the liquid which is likely to stagnate in the liquid reserving part 3a at the top end of the nozzle is blown off to eliminate dripping.
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