| 摘要 |
A suction sweeper 1 is designed for road and/or pavement (sidewalk) use. A fan 5 is connected by a suction duct 6 to a suction head 7. Debris is entrained with air entering the suction tube 6, and travels past the fan 5 to a collection bag 9 in a collection chamber 8. Debris is collected in the bag 9, which has a degree of porosity, to allow the air to be exhausted from the chamber 8. The exhaust air from the chamber 8 is led via an exhaust duct 10 back to the suction head 7, where it is again sucked into the suction duct 6, to be recirculated through the suction system and collection chamber 8. There is no need to provide elaborate filtering systems for the exhaust air from the collection chamber 8, since most dust particles entrained in the exhaust air will tend to be sucked back into the suction tube 6, and be circulated again through the collection chamber 8. |
