Patent ID: 8174814
Filing Date: 2012-05-08
Classification: H01T

Abstract:
1. A wire electrode type ionizer of DC type or pulse DC type for generating positive and negative ions by applying positive and negative high voltages, each at the same level, to a discharge electrode to generate a corona discharge, wherein: the discharge electrode includes a positive wire electrode and a negative wire electrode each formed of a wire with a circular cross section; each circumferential surface of the wire electrodes is formed as a discharge surface for the corona discharge, wherein a diameter of the negative wire electrode is larger than a diameter of the positive wire electrode; an electrode holding member formed of an insulating material and being shaped to be elongated in one direction, wherein the electrode holding member comprises a hollow portion extending in a depth direction from an open end of the electrode holding member; and two wires comprising the positive wire electrode and the negative wire electrode, attached to the electrode holding member and crossing the hollow portion in parallel to one another and from one side to the other side of the hollow portion in a direction lateral to the direction of elongation of the electrode holding member and lateral to the depth direction of the hollow portion.