Patent ID: 7470298

Claim:
Device for removing suspended particles from an airflow, wherein the device has an intake opening, an air conveying duct ( 3 ), and a fan, wherein the air conveying duct ( 3 ) deflects sectionally the airflow with regard to its flow direction, wherein a bottom plate ( 4 ) and a top plate ( 5 ) are spaced from one another and form between them the air conveying duct ( 3 ), the bottom plate ( 4 ) and the top plate ( 5 ) have in one section at least two sequentially arranged arc-shaped curved portions that extend sectionally at least approximately parallel to one another and are oriented opposite to one another, the forward area ( 9 ) of the top plate ( 5 ) and the forward section ( 8 ) of the bottom plate ( 4 ) delimit an intake chamber ( 2 ) with the intake opening ( 1 ); and wherein an inner plate ( 7 ) and a backplate ( 11 ) delimit laterally an exhaust chamber ( 6 ) with an outlet opening ( 12 ) which exhaust chamber is arranged downstream of the section of the air conveying duct ( 3 ) in which the positive guiding means ( 60 ) or the arc-shaped curved portions are arranged.