| 摘要 |
An apparatus for silencing and catalytic treatment of gases comprising: an air-tight casing (1) connected to an exhaust inlet pipe (2) and to an exhaust outlet pipe (3), one or more acoustic compartments (4), one or more monolithic bodies (5), and a diffuser element (7) connected to the inlet pipe (2) or to a further pipe or channel (8) within the casing, from which diffuser element flowing gases are distributed evenly across the inlet face (9) of one of the monolithic bodies, wherein the diffuser element (7) comprises a guide baffle or plate (10) and a juxtaposed stagnation baffle of plate (11) causing full or partial flow stagnation in front of the stagnation plate and causing the gases to flow radially within the diffuser element, that the diffuser element (7) has at least 2 apertures (12) of which at least 2 apertures (12f) are pervaded by partial flows of the gas and are adapted to provide additional pressure recovery in the gas flow passing through the diffuser element (7), and that the geometry defining the fluid flow field within the diffuser (7) is designed to prevent flow separation from the contour walls of the diffuser. <IMAGE>
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