Patent ID: 7687036

Claim:
An ion diffusing apparatus comprising: a blower that sends out air; a wind-blowing path having the blower at one end thereof and a blowout opening at another end thereof; an ion generating apparatus of which a body is provided outside the wind-blowing path such that the ion generating apparatus does not disturb a flow of air in the wind-blowing path, the ion generating apparatus having an electrical discharging surface inside the wind-blowing path; and a rectifier provided in the wind-blowing path in a portion thereof from the blower to the ion generating apparatus, and rectifying disturbance of air in the wind-blowing path in the portion from the blower to the ion generating apparatus, wherein the ion generating apparatus generates ions in air flowing over the electrical discharging surface, wherein a relation of 0.7×w 1 ≦w 2 ≦1.3×w 1 is established at the location of the ion generating apparatus where a width of the ion generating apparatus in a direction nearly perpendicular to a flow of fluid passing through the electrical discharging surface is defined as w 1 and a width of the wind-blowing path opposed to the electrical discharging surface is defined as w 2 , the wind-blowing path is divided into a plurality of paths, an aspect ratio of a cross section of the wind-blowing path is gradually changed from a position where the ion generating apparatus is provided to the blowout opening, and wherein the rectifier, the ion generating apparatus, the wind-blowing path, and the blowout opening are arranged in relation to each other to obtain substantially uniform wind velocity and ion concentration in any portion of the blowout opening.