| 摘要 |
A dust collecting apparatus having a housing (11) provided with an inlet duct (12a) and a discharge duct (11a), a plurality of ceramic filter elements (21) disposed within the housing, each of the ceramic filter elements (21) being made of porous ceramic material and having a thin walled cellular structure formed with a plurality of axially extending passages separated from each other by thin partition walls, wherein a first group of the axial passages are in the form of inlet passages closed at their one ends and opened at their other ends to introduce therein exhaust gases supplied from the inlet duct to be purified, while a second group of the axial passages are in the form of outlet passages opened at their one ends to discharge purified gases therefrom through the discharge duct and closed at their other ends, wherein a cover body (31 or 32) is assembled with the filter elements (21) at a downstream side thereof to form a closed chamber (R) in open communication with the outlet passages of the filter elements (21) and provided with an outlet duct (31a, 32a, 31b or 32b) which opens toward the interior of the closed chamber (R) to permit the purified gases dischaged therethrough from the closed chamber (R) toward the discharge duct (11a), and wherein the housing (11) is provided with an induction duct (33, 34, 35 or 36) which is opposed to the outlet duct (31a, 32a, 31b or 32b) of the cover body to introduce washing gas into the closed chamber therethrough. <MATH> |
