| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology capable of suppressing shortage of a fluid in a fluid chamber when a piezoelectric element is driven, and realizing stable use feeling, in a fluid injection device.SOLUTION: A fluid injection device injecting a fluid, includes an injection pipe having an opening portion for injecting the fluid, a fluid chamber communicated with the injection pipe, a piezoelectric element capable of changing a volume of the fluid chamber, a control portion for controlling a driving voltage applied to the piezoelectric element, and a fluid supply portion for supplying the fluid at a constant flow rate to the fluid chamber. The fluid supply portion supplies the fluid at the constant flow rate over V1×fmax[ml/s], when a maximum frequency settable to the driving voltage is fmax[Hz], and a variation of the volume of the fluid chamber in driving the piezoelectric element by applying the driving voltage of the maximum value to the piezoelectric element, is V1[ml]. |
