| 摘要 |
<p>An integrated 3-D blade structure which consists of at least two integrated pieces made by one-time shaping. Each integrated piece has a plurality of shorter 3-D curved-face blades and the relative let-in structures. Via the let-in structures, it is easily to match with the at least two integrated pieces. Then, the plurality of shorter blades could be matched with adjacent blades, depending on different design, to form a complete 3-D curved-face blade, or keeping a little distance between the matching blades to become a "Multi-Row" blade structure. Originally, since the whole blade structure with complicate 3-D curved face has been divided into several shorter blades for manufacturing, they are made via plastic emergence with forming or wax forming. Therefore, not only the element amount is highly decreased, but also the cost for position and assembly of blades is going down. Furthermore, the goal to approach the "Multi-Row" diffuser and impeller made via plastic emergence with forming or wax forming could be successful.</p> |
