| 摘要 |
PROBLEM TO BE SOLVED: To make a spray particle size fine. SOLUTION: A liquid flow channel 20B is provided along a center axial line and an annular outside air flow channel 21B is provided to an outer periphery and a liquid branch flow channel 23 is provided on the way of the liquid flow channel and a revolving means 28 is arranged at the re-joining position of the liquid branch flow channel to form a liquid into primary fine particles. A central air inflow part 25 is formed at the central region surrounded by the liquid branch flow channel and air is introduced into the central air inflow part from the outside air flow channel to be impinged against and mixed with the central part becoming an annular film by revolution to perform first mixing while forming the liquid into secondary fine particles and, further, the air inflow hole 15d communicating with the outside air flow channel is provided to the peripheral surface of a flow channel becoming an air-liquid mixing flow channel 30 by re-joining and air is impinged against and mixed with the mixed fluid of the air-liquid mixing flow channel from the outer peripheral surface to be allowed to flow in the mixed fluid to perform second mixing while forming tertiary fine particles and the mixed fluid is injected as air-liquid mixed mist from jet orifices 16g.
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