PROBLEM TO BE SOLVED: To solve a problem that a conventional torch-type plasma device as a generator of atmospheric pressure plasma which is used for a medical purpose has a small irradiation area to make it difficult to give effect of plasma uniformly over a wide range, and to provide an atmospheric pressure plasma generator which generates atmospheric pressure plasma with uniform density and a wide irradiation area.SOLUTION: There is provided an atmospheric pressure plasma generator in which a tapered part 21 is provided for one end of a cylindrical base body 20 which is made of a dielectric body, and two or more surface electrodes 40 to which polyphase current is added is equipped for an outer periphery of the tapered part 21, and a plasma jetting port 23 is provided for a tip end of the tapered part 21, a metal electrode 30 is loosely fitted inside the cylindrical base body 20, and plasma raw material gas is introduced from the other end of the cylindrical base body 20.COPYRIGHT: (C)2015,JPO&INPIT【課題】医療等に用いる大気圧プラズマの発生装置として、従来のトーチ型のプラズマ装置は、照射面積が小さく、プラズマの効果を広範囲に均一にもたらすことが困難であるという問題があった。よって密度が均一で、かつ照射面積が広い大気圧プラズマを発生させる大気圧プラズマ発生装置を提供することが、本発明が解決しようとする課題である。【解決手段】誘電体からなる筒状基体20の一端にテーパ部21を設け、このテーパ部21の外周には多相交流を付加する面電極40を二以上備えると共に、このテーパ部21の先端にはプラズマ噴出口23を設け、筒状基体20の内側に金属電極30を遊嵌し、筒状基体20の他端からプラズマ原料ガスを導入する大気圧プラズマ発生装置により上記問題を解決した。【選択図】図1
