| 摘要 |
<p>The present invention relates to a process and to a machine for collecting dust and cleaning the interior of vehicles, in particular of the type intended for public transportation. The process consists in introducing inside the vehicle (4) a primary flow of low-pressure air (7) with a high flow-rate, which generates a conveyance current, channelled along a closed path which includes the interior of the vehicle (4), from at least one inlet opening (5) to at least one outlet opening (6). At least one secondary flow of air (9) at a higher pressure and with a lower flow-rate with respect to the primary flow is simultaneously fed into the interior of the vehicle (4). The secondary flow is orientated along at least one direction which intersects the primary flow and affects the floor (4a) of the vehicle so as to generate a turbulent motion which removes dust and objects, which are thus subjected to the conveyance action performed by the primary flow. The air which flows out of the outlet opening (6) is subjected to filtration (17,18) and is introduced again into the vehicle through the inlet opening (5). <IMAGE></p> |
