ELECTROSTATIC SPRAYING DEVICE AND METHOD FOR CONTROLLING ELECTROSTATIC SPRAYING DEVICE

摘要

An electrostatic atomizer (100) includes a guard electrode (4) between an opening (11) and an opening (12). The guard electrode (4) is different from a spray electrode (1) and a reference electrode (2). A voltage between the spray electrode (1) or the reference electrode (2) and the guard electrode (4) is controlled to have a magnitude within a prescribed range smaller than a magnitude of a voltage between the spray electrode (1) and the reference electrode (2).

主权项

1. An electrostatic atomizer comprising:
a first electrode which sprays a substance from a tip, the first electrode being provided inside a first opening formed at a surface of the electrostatic atomizer; a second electrode being one of two electrodes between which a voltage is applied, the first electrode being another one of the two electrodes, the second electrode being provided inside a second opening formed at the surface of the electrostatic atomizer; and a third electrode being different from the first electrode and the second electrode and provided between the first opening and the second opening, the third electrode being one of two electrodes between which a voltage is applied, the first electrode or the second electrode being another one of the two electrodes, the voltage between the first electrode or the second electrode and the third electrode being controlled so as to have a magnitude within a prescribed range smaller than a magnitude of the voltage between the first electrode and the second electrode.