Fibrous filter and air purification device

Abstract

Disclosed are: a fibrous filter which can improve the strength of a photocatalyst layer; and an air purification device utilizing the fibrous filter. Titanium dioxide particles (2) are thermally sprayed onto a fibrous filter main body (1) that comprises aluminum fibers each having a diameter of 50 to 500 µm and has an areal fiber weight of 500 to 10000 g / m2 and a void ratio of 50 to 90%. In this manner, a titanium dioxide coating film containing an anatase-type crystal structure at a ratio of 70 mass% or more can be formed.

Description

technical field [0001] The invention relates to a fibrous filter and an air purifier. Specifically, for example, it relates to a fibrous filter having a photocatalyst function capable of detoxifying, antibacterial, and sterilizing pollutants, and an air cleaner using such a fibrous filter. Background technique [0002] Due to the development of an aging society, there is a tendency for the proportion of elderly people with low immunity to increase in the total population. Accordingly, from the viewpoint of preventing nosocomial infection and food poisoning, sanitation is carried out at medical sites, food production and processing sites Strengthening of management has become an urgent issue. Against such a social background, various antibacterial processed products have been developed, and in recent years, the application of photocatalyst functions to antibacterial processing has particularly attracted attention. [0003] Here, the so-called "photocatalyst function" means ...

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Problems solved by technology

[0006] In addition, since titanium dioxide exhibits photocatalytic activity only under ultraviolet irradiation, it cannot exhibit sufficient catalytic activity under indoor light that generally does not contain ultraviolet components.

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