| 摘要 |
<p>The present invention relates to the industrial vacuum cleaner sector. In particular, the invention relates to a vacuum cleaner (1) with a reverse air jet filter cleaning device comprising suction means (2) of known type associated with a vacuum chamber (3) and activated by a control unit, cartridge filter means (5) to filter a primary flow of dust-laden air (F) connected to said chamber (3), and containment means (4) to contain the dust drawn up and retained by said filter means. Said reverse air jet filter cleaning device comprises feed means (6) to feed a secondary reverse air jet (F'), emission ducts (8) connected to said feed means (6), and solenoid control valves (7) associated with said emission ducts (8) and that can be selectively activated by said control unit. Furthermore, said filter cleaning device comprises sleeves (9), connected between said emission ducts (8) and said filter means (5), and each sleeve (9) comprises a plurality of ports (11) adapted to place the inside of the sleeve (9) in communication with said vacuum chamber (3) to ensure suction of the primary flow of dust-laden air (F), wherein said sleeve (9) comprises movable means slidingly associated therewith, adapted to reversibly close said ports (11) during cleaning of said filter means (5) and to simultaneously allow the passage of said secondary reverse air jet.</p> |
