| 摘要 |
Provided is a two-piece shrouded impeller (100), and methods for manufacturing and assembling a two-piece shrouded impeller. The two-piece shrouded impeller, in accordance with one embodiment, may have a one-piece partially shrouded impeller (120) having a central hub (122), a number of blades (150) integrally attached to the hub, and one or more integral partial shroud sections (130) integrally attached to the blades. The two-piece shrouded impeller in this embodiment may also have a separate shroud section (110) that attaches to the one-piece shrouded impeller, so that the separate shroud section and the partial shroud sections combine to form a completed shroud that covers the impeller blades. The separate shroud section may attach to the one-piece shrouded impeller with a snap joint, or with an interference fit, or using a squeeze deformable ring. Once attached, the shroud section may be bonded to the one-piece shrouded impeller by brazing, stick welding, ultrasonic welding, or electron beam welding. |
