| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure where wave-like blade pumps are multiplied by overlapping in tandem (as skewered). SOLUTION: An overlapping width is decreased by forming more than one pumping chamber 5 with overlapping more than one common casing 23 having three elements of a side face A (2), a side face B (3) and a circumference face (4) at both sides. A rotating axis diameter is lessened by absorbing a fit tolerance on overlapping the casing (23) and decreasing a sliding resistance to a rotating axis with connecting between or among more than one rotor (6) with more than one short axis (24).
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