| 摘要 |
PROBLEM TO BE SOLVED: To obtain a photocatalytic air purifier which reliably adsorbs an intermediate product on an adsorbent layer and prevents discharge to the outside even if the intermediate product having low adsorbability to a photocatalyst layer is produced by making a light source opposite to the photocatalyst layer in a ventilation pass and disposing the adsorbent layer on the downstream side of the photocatalyst layer and the light source. SOLUTION: In the photocatalytic air purifier 1, external air sucked from a suction opening 4 by a blower fan 3 in a ventilation pass 2 is spouted from a nozzle 5. A fiber filter 6, the blower fan 3, a light source 7 which excites a photocatalyst, a photocatalyst layer 8 and an adsorbent layer 9 are successively disposed in the ventilation pass 2 from the upper stream side. The light source 7 is made opposite to the photocatalyst layer 8 and the adsorbent layer 9 is disposed in close contact with the photocatalyst layer 8 on the downstream side. Organic substances such as malodorous components adsorbed on the photocatalyst layer 8 are subjected to oxidation decomposition by irradiation with excitation light from the light source 7. Even if an intermediate product having low adsorbability to the photocatalyst layer 8 is produced, it can reliably be adsorbed on the adsorbent layer 9. |
