Patent ID: 7761956

Claim:
System for dry cleaning of work pieces with a gaseous medium, by means of suctioning off solid or liquid particles that adhere to them, having a suction channel ( 9 ) that leads to a suction unit (i 0 ), and a guide device that precedes the suction channel, by means of which the suction stream in the region of the surface of the work piece ( 2 ) is guided in such a manner that a flow is formed at the surface of the work piece, which entrains the adhering solid or liquid particles, whereby the guide device is configured as a suction mold (I) that surrounds the work piece on all sides, the inside arcuate contours ( 4 ) of which follows the outside contours of the work piece ( 5 ) and leaves defined gaps ( 3 ) which are a surface volume of a space inbetween wall of said arcuate contours, wherein a gaseous medium flows to the gaps by way of feed slots ( 6 ) and feed bores ( 7 ) in the suction mold, whereby the gaps ( 3 ), and the medium feed slots ( 6 ) and medium feed bores ( 7 ), are configured, arranged, and sized in such a manner that the flow velocity of the gaseous medium is more than 20 m/s within said arcuate contours and said gap; wherein the suction channel ( 9 ) is connected with the interior of the suction mold ( 1 ) by way of a suction slot ( 8 ) that extends at least substantially over an entire length of the suction mold which has the work piece wherein the suction slot ( 8 ) and the adjoining suction channel ( 9 ) are each of larger cross-sections than the sum of the cross-sections of all of the gaps ( 3 ) and the sum of the cross-sections of the feed slots ( 6 ) and feed bores ( 7 ) for the gaseous medium; wherein the sum of the cross-sections of the feed slots ( 6 ) and feed bores ( 7 ) for the gaseous medium corresponds to 0.9 to 1.2 times the sum of all the gaps ( 3 ) wherein the contours ( 4 ) of the suction mold (I) follow the contours ( 5 ) of the work piece ( 2 ) at a spacing of between 1 mm and 5 mm.