| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an indoor circulating type range hood fan with an improved cleaning property by maintaining decomposing performance and deodorization performance of oil-and-fat contents throughout a long period of time, and reducing a cleaning frequency and a replacement frequency. <P>SOLUTION: A deodorization material 11 of a continuous porous structure mainly composed of a hydrous magnesium silicate clay mineral adsorbs water contents, oil-and-fat contents, and odor components by the hydrous magnesium silicate clay mineral, the oil-and-fat contents and the odor components are hydrolyzed by a catalytic action of the hydrous magnesium silicate clay mineral itself to maintain high oil-and-fat content decomposing performance, the oil-and-fat contents are not supplied to a photocatalytic deodorizing device 31 in a downstream side, and primary superior sterilization and deodorization performance of the photocatalytic deodorizing device 31 is carried on. <P>COPYRIGHT: (C)2007,JPO&INPIT |
