| 摘要 |
<p>A corona discharge type ionizer having noise reduction realized by adding a highly effective ion balance function with a simple construction without making any special change in the construction to enable the use of a piezoelectric transformer. A corona discharge type ionizer (10) having a control electrode (6) disposed at a position which is in the cylinder of a blowing tube (2) serving also as a shield body and at which ion balance is established, wherein the ionizer satisfies 2Dc < Ds, where Dc is the cylinder inner diameter of the blowing tube (2) and Ds is the ring outer diameter of the control electrode (6).</p> |
