光触媒式小型空気清浄機による飛沫除去挙動の評価

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  • 秋吉 優史
    大阪府立大学工学研究科 大阪府立大学研究推進機構大阪国際感染症研究センター
  • 綿野 哲
    大阪府立大学工学研究科
  • 落合 剛
    神奈川県立産業技術総合研究所川崎技術支援部材料解析グループ

書誌事項

タイトル別名
  • Evaluation of the Droplet Removal Behavior by a Small Air Cleaner with Photocatalyst
  • ヒカリ ショクバイシキ コガタ クウキ セイジョウキ ニ ヨル ヒマツ ジョキョ キョドウ ノ ヒョウカ

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説明

<p>A small air cleaner with the visible-light-responding photocatalyst was developed. This air cleaner is specialized in removal of the splashed droplets which flies between facing peoples to cope with various infectious diseases. Photocatalyst of a tungsten trioxide system which response efficiently to visible-light was sprayed on a conventional nonwoven fabric filter with a visible-light LED module and a silent type fan are applied. The photocatalyst was excited by visible-light to generate active oxygen that oxidizes and decompose various organic matters. In this study, the physical performance of the air purifier was estimated, 1) the removal action of splashed droplets from the oral cavity with special motion-picture system, 2) evaluation of the transmittance of droplets to the filter and 3) droplets capture performance in a clean bench. Furthermore, performance of the photocatalyst system was evaluated by formaldehyde gas decomposition rate in a small chamber. As a result, droplets of 5 micrometers or more can be removed effectively by the small air purifier, and it is considered that the virus contained in the droplets caught by the filter will be inactivated with the photocatalyst by degrees.</p>

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