| 摘要 |
A casing 1 in the form of a circular cylinder has an inlet port 5, a cover 2 and a bottom 3 having an outlet port 6. In the cover 2 and/or in the bottom 3 are holes 7, 7' arranged in the zone confined by two planes located at a distance of +/-0.1 R, where R is the radius of the casing 1, from the plane passing through an axis 9 to the casing 1 perpendicularly to the plane containing the casing axis 9 and the outlet port centre 10. The holes 7, 7' may be between 0.58 and 0.68R from the axis 9 and contain porous filter elements (8 Fig. 3). The presence of the holes 7, 7' reduces the noise emitted from the air cleaner. <IMAGE> |
