PROBLEM TO BE SOLVED: To provide an air filter unit that is capable of exerting not only a high dust collecting effect but also high a deodorization effect by utilizing electric force and polarity of a chemical adsorption component.SOLUTION: An air filter unit is made up of, from an upstream side, a charging part 14, an air filter 15 in which a sheet-like filtering material, which consists of a substrate layer 16 supporting a filter shape and a charged fiber layer 17 capturing particles, is pleated, and a conductive fiber layer 18 which is arranged at a downstream side of the air filter 15 and adhered to the air filter 15, and in which the conductive fiber layer 18 is connected to earth. Because the substrate layer 16 includes a chemical adsorption component, and the chemical adsorption component is an amine-based component including a functional group having the reverse polarity of the polarity of the charging part 14, the filter unit is capable of exerting a desired deodorization effect even by a small carried amount.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2020,JPO&INPIT【課題】電気的な力と化学吸着成分の極性を利用して、高い集塵効果だけでなく高い脱臭効果を発揮可能なエアフィルタユニットを提供する。【解決手段】上流側から荷電部１４と、フィルタ形状を支持する基材層１６と粒子を捕集する帯電繊維層１７からなるシート状濾材をプリーツ化したエアフィルタ１５と、エアフィルタ１５の下流側に配置されたエアフィルタ１５に貼り合わせた導電繊維層１８からなり、導電繊維層１８をアースに接続するエアフィルタユニットであり、基材層１６は化学吸着成分を含み、前記化学吸着成分は荷電部１４の極性と逆極性の官能基を含むアミン系化合物であることを特徴とするため、少量の担持量でも所望の脱臭効果を発揮可能である。【選択図】図７
