US 2005/0231884 A1 · Board for ion generation and ion generating apparatus

Abstract

Provided is a board for ion generation that is capable of generating negative ions with much better efficiency and in an amount larger than that of positive ions. In the board for ion generation, a discharge electrode is formed on one principal surface of a substrate formed of ceramics, an induction electrode is formed on another principal surface of the substrate, the discharge electrode and the induction electrode being disposed opposite to each other, a first protective layer and a second protective layer are formed so as to cover the discharge electrode and the induction electrode, respectively. Surface discharge is generated on a surface of the first protective layer by applying an AC voltage between the discharge electrode and induction electrode, and positive ions and negative ions are alternately generated in the air. In the board for ion generation, the porosity of the substrate is 5 to 10 vol. %.

Claims11

Dependent claims

A board for ion generation, comprising:

a substrate formed of ceramics;
a discharge electrode formed on one principal surface of the substrate;
an induction electrode formed on another principal surface of the substrate;
a first protective layer formed so as to cover the discharge electrode on the one principal surface of the substrate;
and
a second protective layer formed so as to cover the induction electrode on the other principal surface of the substrate,
wherein the discharge electrode and the induction electrode are disposed opposite to each other,
wherein by applying an AC voltage between the discharge electrode and induction electrode, surface discharge directed from a zone above the discharge electrode toward a zone above an end of the induction electrode and surface discharge directed from the zone above the end of the induction electrode toward the zone above the discharge electrode are generated alternately on the surface of the first protective layer, and thereby positive ions and negative ions are generated in the air, and
wherein porosity of the substrate is 5 to 10 vol. %.

6 more elements

An ion generating apparatus comprising:

a substrate for ion generation including:
a substrate formed of ceramics,
a discharge electrode formed on one principal surface of the substrate,
an induction electrode formed on the other principal surface of the substrate,
a first protective layer formed so as to cover the discharge electrode on the one principal surface of the substrate, and
a second protective layer formed so as to cover the induction electrode on the other principal surface of the substrate,
wherein the discharge electrode and the induction electrode are disposed opposite to each other,
wherein by applying an AC voltage between the discharge electrode and induction electrode, surface discharge directed from a zone above the discharge electrode toward a zone above an end of the induction electrode and surface discharge directed from the zone above the end of the induction electrode toward the zone above the discharge electrode are generated alternately on the surface of the first protective layer, and thereby positive ions and negative ions are generated in the air, and
wherein porosity of the substrate is 5 to 10 vol. %;
an air fan for delivering the positive ions and negative ions generated by the board for ion generation;
and
a control unit for supplying high AC voltage necessary for discharge operation to the board for ion generation.

9 more elements

Dependencies are inferred from the claim text.

Board for ion generation and ion generating apparatus

Life of this patent

Board for ion generation and ion generating apparatus

Life of this patent

Abstract

Claims11