PROBLEM TO BE SOLVED: To solve a problem that a conventional air cleaner can clean air by utilizing action of corona discharge, but is difficult to safely and efficiently collect a radioactive material and PM 2.5 in the air.SOLUTION: A positive electrode is a pipe-like electrode formed of a conductive material. A plurality of pipe-like positive electrodes are arranged oppositely and approximately parallel to a flow of ion wind in a plurality of steps vertically. A brush-like negative electrode 1 manufactured of a conductive material is arranged between the pipe-like positive electrodes 2 oppositely arranged. A high voltage is applied between the pipe-like positive electrodes 2 and the brush-like negative electrode 1 to discharge, and negative ion wind is generated by generating corona discharge. An air flow involving surrounding air along pipes of the pipe-like positive electrode 2 is generated and circulated through between the electrodes, and fine dust contained in air is attached to the pipe-like positive electrodes 2 to efficiently stick and collect the dust to the pipe-like positive electrodes 2.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】従来の空気清浄機は、コロナ放電の働きを利用して空気を清浄にすることはできるが、空気中の放射性物質やPM2.5を安全・効率よく収集することが困難であり、これを解決する必要があった。【解決手段】プラス電極は導電材料で形成したパイプ状電極とし、該パイプ状プラス電極は、対向してイオン風の流れに対して略平行に複数本を上下に複数段配設し、この対向して設けられたパイプ状プラス電極2間に導電性のある材料で製作したブラシ状マイナス電極1を設け、このパイプ状プラス電極2とブラシ状マイナス電極間1に高電圧を印加することで放電し、コロナ放電を発生させることによりマイナスイオン風が発生し、周囲の空気をパイプ状プラス電極2のパイプに沿って巻き込む気流が、この電極間を通って発生循環し、空気中に含まれる微細な粉塵をパイプ状プラス電極2に付着させ、パイプ状プラス電極2に効率良く粉塵を吸着集塵できる空気清浄機。【選択図】図1
