| 摘要 |
PURPOSE:To prevent falling of a catalyst and to secure a long life of the catalyst by enveloping the catalyst filter wherein catalyst material such as activated carbon and hopcalite is used with felt or felt filter and making the catalyst filter multiple structure. CONSTITUTION:A catalyst filter 3 manufactured by using activated carbon and hopcalite is enveloped with a felt filter 1 to make a multiple structure and therefore the surface of the catalyst filter is not allowed directly to contact with external force and harmful gas which is produced by a machine main body and the felt filter which has enveloped the catalyst filter is arranged inside an outer case 2. Also, the catalyst material is enveloped with felt and may be arranged inside the outer case and the catalyst material may be arranged inside the outer case in a sandwich between felt and paper filter. |
