Back to results
US 2013/0164136 A1Published application
Impeller
AssigneeGrundfos Holding A/S
InventorJens VESTERGAARD BOLL
Life of this patent
Estimating the term…
Abstract
An impeller (2) for a centrifugal pump includes a first shroud having a plurality of blades (8). A second shroud is joined onto the first shroud by way of welding. Each blade (8) has an apex region (12), at which the blade contacts the second shroud. At least one of the blades (8) in a first section (20) of the apex region (12) has a weld connection to the second shroud, and in at least one second section (14) of the apex region (12) is free of a weld connection.
Claims12
An impeller (2) for a centrifugal pump, the impeller comprising:
- a first shroud having a plurality of blades (8);
- and
- a second shroud joined onto the first shroud by way of welding,
- wherein each blade (8) has an apex region (12) where the blade contacts the second shroud, and
- wherein at least one of the blades (8) in a first section (20) of the apex region (12) has a weld connection to the second shroud, and in at least one second section (14) of the apex region (12) is free of a weld connection.
2 more elements
Dependencies are inferred from the claim text.