| 摘要 |
PROBLEM TO BE SOLVED: To easily satisfy different requests in a vacuum pump.SOLUTION: At least one pure rotor region is disposed, in particular, in an axial region of a rotor (region where a connecting portion at a side part is not opened), and at least two rotor parts are continued without having a stator part therebetween in the rotor region, and/or at least one pure stator region is disposed, and at least two stator parts are continued without having a rotor part positioned therebetween in the stator region.SELECTED DRAWING: Figure 1 |
