| 摘要 |
PCT No. PCT/SE91/00820 Sec. 371 Date Sep. 29, 1993 Sec. 102(e) Date Sep. 29, 1993 PCT Filed Dec. 3, 1991 PCT Pub. No. WO92/10683 PCT Pub. Date Jun. 25, 1992.In a method of cleaning fan impellers bursts of solid material are discharged towards the impeller blades or other parts of the impeller, subjected to deposits, by pulses of compressed air, shot from a compressed air cannon. A device for cleaning fan impellers includes at least one compressed air cannon for directing shots in the form of pulses of compressed air towards the impeller blades or other parts of the impeller. The outlet cylinder (280) of the cannon is loaded with a charge of solid material (4) to be discharged towards the impeller blades or said other parts of the impeller, upon shooting a pulse of compressed air. |
