| 摘要 |
<p>Rotor units (110) each has a baseplate (112) having a through hole at the center for passing a suction pipe (104) through. Partition walls stand on one of the surfaces of the baseplate. Peripheral walls (114) with gaps in between are disposed around the outer periphery of the baseplate. A driver ring (120) with a through hole (123) at the center has one end connected to the partition and peripheral walls.</p> |
