Electrode device, discharge apparatus, and electrostatic atomization system

An electrode device comprising:

• a discharge electrode of a columnar shape, the discharge electrode having a discharge portion on a front end of the discharge electrode;
• and
• a counter electrode facing the discharge portion,
• wherein the electrode device discharges when a voltage is applied across the discharge electrode and the counter electrode,
• wherein the counter electrode includes:
• a peripheral electrode portion disposed to surround an axis of the discharge electrode;
• and
• a projecting electrode portion projecting from a part of the peripheral electrode portion toward the axis of the discharge electrode,
• wherein, on a virtual plane including the axis of the discharge electrode and a front end of the projecting electrode portion,
• when a virtual reference line is defined, the virtual reference line being a perpendicular bisector of a virtual line that connects a first edge of the peripheral electrode portion, the first edge being a part of the peripheral electrode portion that has a shortest distance to the discharge portion, to a second edge of the projecting electrode portion, the second edge being a part of the projecting electrode portion that has a shortest distance to the discharge portion,
• the discharge portion lies on a side on which the first edge lies, in a view from the virtual reference line.