| 摘要 |
The device has a propeller mounted in downstream of a filter (4), and provided with a vane (2a) mounted on an air flow line of a vacuum motor (1) in such a manner that the airflow causes rotation of the propeller. The propeller is associated with an unbalanced rotary member (3) such that the rotation of the propeller causes rotation of the member, which generates oscillation and/or vibration that is transmitted to the filter for allowing separation of dust aggregated on the filter. A coating made of low adherence material e.g. PTFE, is coated on a face positioned in upstream of the filter. An independent claim is also included for an air suction system comprising an airflow inlet and an airflow outlet orifice arranged respectively in upstream and downstream of a vacuum motor. |
