| 摘要 |
PROBLEM TO BE SOLVED: To extend the life of an electrode in an ion generator and reduce the amount of dust and fine particles which may be attached or accumulated.SOLUTION: An ion generator includes an ion generating element that generates ions by generating a corona discharge between a first needle electrode and a second needle electrode. The ion generator alternately switches between a state where positive ions are generated by the ion generating element by using the first needle electrode as a discharge electrode and using the second needle electrode as an induction electrode, and a state where negative ions are generated by the ion generating element by using the second needle electrode as a discharge electrode and using the first needle electrode as an induction electrode. |
