| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jetting device free from retaining bubbles on the liquid contact vibration surface of an ultrasonic vibration part even if the jetting port of a nozzle faces downward. SOLUTION: The liquid jetting device is provided with a nozzle 1 having a supply port for supplying a liquid and a discharge port 13 for discharging the bubbles in the liquid on the sidewall and mounted so that the jetting port 10 faces downward, an ultrasonic vibrator transducer 2 and a means for supporting the ultrasonic vibrator transducer in the nozzle to jet the liquid supplied into the nozzle by the vibration of the ultrasonic wave, the supporting means is a plate 3, on the upper surface of which a recessed part for housing the ultrasonic vibrator transducer is formed, the lower surface 3a of which enables to vibrate with the ultrasonic vibrator transducer and which is fixed at a higher position than that of the discharge port 13 to be in liquid-tight contact with the nozzle inside surface so that the lower surface 3a crosses the discharge port or is in a position lower than that of the discharge port.
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