| 摘要 |
PROBLEM TO BE SOLVED: To improve an energy efficiency by eliminating influence of a direct wave with respect to an ultrasonic wave reflected by a paraboloid. SOLUTION: This mist jet head comprises a nozzle 51 for ejecting a liquid in mist, a liquid chamber 52 communicating with the nozzle 51, an ultrasonic wave generation element 58 which is provided to a side wall of the liquid chamber 52 and is adapted to apply an ultrasonic wave to a liquid in the liquid chamber 52 by generating an ultrasonic wave, and a reflector 80 having a reflective surface 80p for reflecting the ultrasonic wave advancing toward the central section of the liquid chamber 52 from the ultrasonic wave generation element 58 to collect the wave to a focal point F positioned near the nozzle 51 in the liquid chamber 52. The liquid chamber 52 is in a cylindrical shape having an axis passing through the focal point F. The reflector 80 is made to be in a projection shape having the reflective surface 80a constituted such that a parabola having a central axis perpendicular to the axis of the liquid chamber 52 is rotated around the axis of the liquid chamber 52. COPYRIGHT: (C)2007,JPO&INPIT
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