Blower for delivery of gases involves rotor rotating at constant speed and on which at least four rotary vanes are fixed on part circle in bearings

摘要

In a ring-shaped delivery channel (5) with variable width the rotary vanes (2) are moved in a circular manner. The rotary vanes are rotated at constant speed relatively to the rotor. The axes of the rotary vanes are parallel to the rotor axis. The rotary vanes at least once during a full circulation of the rotor (3) in the transport area (7) are aligned with their broad side crossways to the ring channel (5). The rotary vanes in the drawback area (6) with their broad side are aligned at least once during the rotor circulation virtually in the direction of the ring channel (5).