| 摘要 |
PURPOSE:To obtain stable atomization characteristics, by providing a recessed part to the part, which is coincided with the knot part forming position of an oscillation system generating flexural oscillation, on the surface of a nozzle plate to lower the rigidity of said part. CONSTITUTION:An electric oscillator 1 is oscillated by the application of voltage from an oscillation circuit and a nozzle plate 3 is vibrated through a fixing layer 4b. Because a nozzle 3 generates flexural oscillation by this mechanism, the liquid allowed to fill a liquid chamber 8 is pressurized and atomized through a nozzle orifices 6. Because atomization is dependent on vibration characteristics, it is necessary to stabilize the vibration characteristics of the nozzle plate 3 and, therefore, a recessed part 10 is provided to the knot part forming position of vibration on the surface of the nozzle plate 3 to make the plate thickness thin. By this method, the flexural oscillation at the center of the nozzle plate 3 is easily converted to vibration motion at the recessed part 10 as the starting point and the knot of the oscillation system can be made constant at this position and, as a result, the stabilization of atomization characteristics is achieved.
|
