Patent ID: 9666402
Date: 2017-05-30
CPC Classifications: A61L,H01J,H01T

Claim:
1. An ion generation apparatus, comprising: discharge electrodes including a first needle-like electrode, a second needle-like electrode, a third needle-like electrode, and a fourth needle-like electrode, each of which is arranged such that a direction of extension thereof is parallel and each of which generates ions by discharge; and an air flow path through which a gas for conveying the ions generated by said discharge electrodes flows, wherein needle tips of said first needle-like electrode and said second needle-like electrode protrude from a first wall surface that forms said air flow path, are spaced apart from each other by a first interval, and are arranged in line in said air flow path, needle tips of said third needle-like electrode and said fourth needle-like electrode protrude from a second wall surface that forms said air flow path and faces said first wall surface, are spaced apart from each other by a second interval, and are arranged in line in said air flow path, said first needle-like electrode and said fourth needle-like electrode generate positive ions, and said second needle-like electrode and said third needle-like electrode generate negative ions, and the first wall surface from which said first needle-like electrode and said second needle-like electrode protrude and the second wall surface from which said third needle-like electrode and said fourth needle-like electrode protrude are provided in different discontinuous planes which are directly opposed to one another with the air flow path provided therebetween, and the gas which flows through the air flow path passes directly through a space defined directly between the first wall surface and the second wall surface.