Liquid injection device

摘要

A liquid injection device includes: a chamber to which the liquid to be injected is supplied and the injection nozzle is connected; a pump that pumps the liquid into the chamber; a volume varying unit that varies the volume of the chamber by being deformed according to a drive voltage applied thereto; and a drive voltage applying unit that applies the drive voltage having a predetermined voltage waveform to the volume varying unit in a state in which the liquid is supplied to the chamber, wherein the pump is a unit that pumps the liquid to the chamber in a state involving the pressure variations, and the drive voltage applying unit is a unit that applies the drive voltage to the volume varying unit while compensating the influence applied by the pressure variations of the pumped to the chamber on injection by varying the voltage waveform of the drive voltage.

主权项

1. A liquid injection device configured to inject liquid from an injection nozzle comprising:
a liquid supplying unit configured to supply liquid to a liquid chamber connected to the injection nozzle; a volume varying unit configured to vary a volume of the liquid chamber according to a drive voltage applied to the volume varying unit; and a controller configured to apply the drive voltage to the volume varying unit, wherein the drive voltage has a voltage waveform, wherein the liquid supplying unit is configured to output a phase signal to the controller, the phase signal indicates a pressure variation of the liquid supplied from the liquid supplying unit to the liquid chamber, wherein the controller varies the voltage waveform of the drive voltage on the basis of the phase signal.